Subject Delta
Originally a deep sea diver nicknamed Johnny Topside who discovered the underwater city of Rapture, he was imprisoned and experimented on, becoming the first Big Daddy successfully bonded to a Little Sister, Subject Delta. After being forced to kill himself by the Little Sister’s mother, he is resurrected a decade later in a decaying Rapture run by her cult, with his daughter Eleanor set to be modified. Delta’s journey to save her allows player choices between mercy or ruthlessness.
Strength
- Slaps a person away (source)
- Punches a Splicer through the air and into a wall, killing it (source) (T)
- Breaks large chunks of coral (source)
- Shatters a frozen enemy and a stone barrier (source) (T)
- Destroys a barricade with a charging strike using his drill (source)
- Jumps down a storey, crushing a person’s head underneath his foot (source)
- An audio diary recounts him snapping the arms and legs of people attempting to inject him with drugs (source)
Durability - Blunt Force
- Has an object kicked at him, bouncing off with no damage (source)
- Has rubble shatter on him, thrown by a large Splicer capable of smashing through large debris (source) (T)
- Takes hits from a large Splicer who threw a large chunk of rubble at Delta before smashing through it when thrown back (source) (T)
- Struck by a heavy torrent of water which buckled and broke open a metal door (source)
- Hit by water flooding a room after its giant window shatters (source)
Durability - Other
- Jumps down a storey (source) (T)
- Jumps down a storey, crushing a person’s head underneath his foot (source)
- Is in the middle of a room as it’s set alight and shot repeatedly until the floor gives way, falling a notable distance into water, then walks off without needing to heal (source)
- Is in the front of a train struck by a torpedo before falling a large distance through water, though knocked out briefly after landing (source)
- Near a large amount of explosives when they detonate, sustaining notable injury but still catches a submarine railing as it ascends and pulls himself onto it (source)
- Blasted by electricity from a Splicer using the Electro Bolt Plasmid (source)
Durability - Gameplay
- Can take hits from other Alpha Series Big Daddies (source)
- Can be knocked back by a Big Sister (source)
- Can be stabbed by Big Sisters (source)
- Can be slashed by Splicers capable of easily decapitating people (source) (Nv)
- Can be struck by rockets (source)
- Can be hit by Incinerate! blasts from Big Sisters (source)
Speed
- Dashes forwards with notable speed (source)
Weapons - Drill
- Handheld drill holds a person in the air while drilling into their chest before throwing them away (source)
- Breaks the tile floor (source)
- With an upgrade, can reflect projectiles by spinning it in front of him (source)
- Appears from nowhere when he first wakes up after being revived (source)
Weapons - Rivet Gun
- Fires rivets (source)
- Can be loaded with trap rivets that fire at nearby enemies (source)
- Shooting trap rivets into an enemy causes them to launch out shortly after, damaging the enemy (source)
- Unused trap rivets can be picked back up (source)
- Shoots and kills four Splicers with one bolt each from a distance (source) (T)
- A Big Daddy’s rivet gun can split a Splicer in half with its shots (source) (Nv)
- With an upgrade, heats the rivets, setting enemies ablaze on hit (source)
Weapons - Machine Gun
- Rotary gun that fires .50 caliber rounds (source)
- Can also shoot anti-personnel rounds (source)
- Can shoot armour-piercing rounds (source)
- Can be upgraded so bullets ricochet (source)
Weapons - Shotgun
- Double-barreled shotgun that fires 00 buck shells (source)
- Can be upgraded to hold 6 rounds at once (source)
- Can also fire solid slugs (source)
- Can fire incendiary phosphorus bucks (source)
- With an upgrade, has a chance to electrify enemies (source)
Weapons - Spear Gun
- Launches spears as a sniper rifle equivalent; spears can be recovered after use (source)
- Has access to trap spears with electric cables, usable as shocking tripwires or to shock enemies directly (source)
- Can shock enemies hit directly with trap spears (source)
- Can be loaded with rocket-propelled spears that explode shortly after contact (source)
- Appears to have been used to pierce Splicers to the wall (source)
Weapons - Launcher
- Explosive launcher that shoots frag grenades (source)
- Can also fire proximity mines (source)
- Shoots heat-seeking rockets (source)
- With an upgrade, launches cluster bombs causing smaller explosions after the initial one (source)
Weapons - Hack Tool
- Fires a dart to hack machines from a distance (source)
- Can be loaded with auto-hack darts for instant hacking success (source)
- Can drop mini turrets that automatically fire on nearby enemies (source)
- Mini turrets automatically fire on nearby enemies (source)
Weapons - Research Camera
- Camera that films enemies; damaging and killing while recording increases damage to that enemy type (source)
- Unlocks extra abilities and tonics after studying large amounts of the same enemy type (source)
Plasmids
- Created from ADAM and injected (first dose painful), Plasmids grant powers through left hand; only one active at a time, switchable easily; powered by EVE, restored by consumables (source)
- Delta can easily switch between Plasmids (source)
Plasmids - Cyclone Trap
- Creates a wind vortex on the ground that throws enemies into the air when stepped in (source)
- With an upgrade, can be charged with other plasmids so their effects activate when trap is stepped on (source)
- Charged trap effects take place when stepped on (source)
- With further upgrade, can be placed on walls and ceilings (source)
Plasmids - Decoy
- Creates a fake version of himself that attracts enemy attention and takes blows (source)
- Decoy attracts attention of enemies and takes blows instead of letting them pass through (source)
- With upgrade, reflects damage back at enemies hitting it (source)
- Further upgrade heals Delta based on reflected damage (source)
Plasmids - Electro Bolt
- Shoots bolts of electricity that stun enemies (source)
- Shocks groups of enemies by zapping water, causing extended damage that kills Splicers (source)
- Another user kills a man in one shot (source) (Nv)
- Another user kills two men at once, lighting clothes on fire, boiling eyes out of skulls, and fusing flesh (source) (Nv)
- Activates a panel to open a door (source)
- Activates a generator (source)
- Temporarily (permanently with tonic) deactivates security cameras and drones (source)
- Deactivates drones with a blast (source)
- Prototype version fries and burns area but leaves user unharmed from electricity (source) (Nv)
- With upgrade, charging results in chaining electricity off enemies (source)
- Further upgrade makes chaining standard, charging releases electricity beam (source)
Plasmids - Hypnotize
- Throws a red ball that causes hit enemy to attack allies (source)
- With upgrade, charged to green makes enemy friendly to Delta for a period (source)
- Further upgrade allows hypnotizing a Big Daddy after charging (source)
- Used on Delta by a Splicer, forcing him to kneel, remove helmet, take gun, and shoot himself despite struggling (source)
Plasmids - Incinerate!
- Shoots fire blasts that set people ablaze (source)
- Destroys large amount of ice with a blast (source)
- Quickly melts significant ice and ice on large metal door (source)
- With upgrade, launches larger fire blast affecting area enemies (source)
- Further upgrade makes large blast standard, charging shoots flamethrower (source)
- Spreads along flammable liquids (source)
- Possibly used by Eleanor and Little Sisters to cover body in fire, walk into water, and steam it (source)
- Another user controls fireball in midair (source) (Nv)
- Another user sets woman alight by pointing (source) (Nv)
- Another user lights gas stove without shooting fire everywhere (source) (Nv)
Plasmids - Insect Swarm
- Releases swarm of insects that seek and damage enemies over time (source)
- Upgrade makes insects hide in corpses, attacking enemies that approach (source)
Plasmids - Scout
- Sends spectral version of self to move unseen, usable with other Plasmids, before returning (source)
- Spectral version returns to body (source)
- Upgrade allows hacking while scouting (source)
Plasmids - Security Command
- Blue ball targets robot attention to hit area, causing enemies to be fired upon (source)
- Upgrade allows charging to summon allied drone (source)
- Further upgrade makes summoned bots stronger (source)
Plasmids - Summon Eleanor
- Calls grown Little Sister Eleanor in Big Sister suit to fight alongside (source)
- Eleanor disappears after time limit (source)
- Big Sisters can bust through a door (source)
Plasmids - Telekinesis
- Psychically lifts and throws objects (source)
- Throws gas canisters that explode on impact (source)
- Pulls object blocking giant gears (source)
- Another user kills constable by hitting between eyes with his own badge (source) (Nv)
- Users move ‘bigger Metro parts’ during construction and throw pipe to impale person (source)
- Big Sister tears out thick metal door (source)
- Upgrade throws larger objects faster (source)
- Further upgrade lifts and throws enemies including Big Daddies (source)
Plasmids - Winter Blast
- Shoots cold air that instantly freezes enemies and turrets solid (source)
- Freezes turrets (source)
- Freezes enemy in midair and mid-lunge (source) (T)
- With upgrade, charges to freeze enemy in ice block (source)
- Further upgrade freezes into blocks with regular blasts, charges to shoot ice beam (source)
- Frozen enemies can be shattered (source)
Gene Tonics
- Like Plasmids, created from ADAM; passive abilities, multiple active without switching; notable ones listed
- Drill Specialist: Increases Plasmid EVE efficiency while limiting to Drill, Hack Tool, Research Camera (source)
- Drill Vampire: Restores health with drill attacks (source)
- Electric Flesh: Immune to electrical attacks, increases own electrical strength (source)
- Elemental Sponge: Increases EVE when hit by fire, ice, or electricity (source)
- Elemental Vampire: Charged beam attacks for Incinerate!, Winter Blast, or Electro Bolt heal Delta on damage (source)
- Fountain of Youth: Regenerates health and EVE in water (source)
- Freezing Drill: Drill has chance to freeze enemies like Winter Blast (source)
- Handyman: Repairs allied machines using EVE (source)
- Natural Camouflage: Invisible after standing still briefly (source)
- Sports Boost: Increases speed; makes users more alert (source)
- Sports Boost: Splicer moves blur-fast like acrobat, flips over people to dodge bullets, throws blade before they fire (source) (Nv)
- Walking Inferno: Increases fire damage, reduces fire damage taken (source)
- Several give chance to burst with fire, electricity, ice, or one of three on melee hit (source)
Suit
- Can walk and breathe on Rapture’s sea floor without issue (source)
- Has torch to light dark areas (source)
- Has camera others can see and hear through, plus radio for communication (source)
- Radio allows communication to him (source)
Little Sister Bond
- Alpha Series bonded for life to one Little Sister; separation causes shutdown and coma; Delta separated most of game without detriment (source)
- Eleanor’s stopped heart severs bond, hindering Delta; not restored after restart, but he reawakens and fights with brief struggles (source)
- Some Alpha Series recover from separation but go berserk as foot soldiers; one cries at Gatherer’s Garden (source)
- Eleanor telepathically communicates with Delta across Rapture, shows scenes Little Sisters see through ADAM (source)
- After killing Big Daddies, adopts their Little Sisters who bond seeing him as father until freed or harvested; due to all stemming from his original (source)
- All Little Sisters from his original (source)
- Delta never uses ADAM, but it has potent healing; causes Little Sisters’ regeneration, repeated use gives faster reflexes (source)
- ADAM causes regenerative abilities in Little Sisters (source)
- Repeated ADAM use gives faster reflexes (source) (Nv)