Mass Effect

Javik

Javik is the Avatar of Vengeance among the Prothean people, representing the rage of his people exterminated by the Reapers 50,000 years ago. He led a small group of Protheans who cryogenically froze themselves to rebuild after the Reapers left, but betrayal led to his isolation as the sole survivor. Discovered on Eden Prime 50,000 years later, he was revived by Commander Shepard and joined the crew to destroy the Reapers and avenge his people.

Biotics

Lifts two Collectors into the air and slams them into a wall, then releases a blast that sends four flying. (source) (3)
Releases a pulse that staggers Shepard and a squadmate just after waking from cryogenic sleep. (source) (3)
Disables a shield generator. (source) (3)
Sends a Vorcha flying, possibly killing it. (source) (3)

Biotics Abilities

Dark Channel: Attacks a foe with a persistent, damaging biotic field that jumps to a nearby target if the current target dies. Can be upgraded in various ways. (source) (3)
Pull: Yanks a foe off the ground. Can be upgraded in various ways. In gameplay, can pull a YMIR mech off its feet. (source) (3)
Slam: Lifts a foe up and slams them into the ground, delivering 1170 Newtons of force, and can be further upgraded. In gameplay, can pick up and slam down a Geth Prime. (source) (3)
Lift Grenade: Throws a grenade that creates a mass effect field sending foes flying. Can be upgraded in various ways. (source) (3)

Weapons

Wields the Particle Rifle in cutscenes, shown to disintegrate those it kills. (source) (3)
In the novels, assault rifle rounds tear up solid objects, sever limbs, and send people flying. (source)
The M-76 Revenant in Paragon Lost shreds rock and blows apart another gun with a single shot. (source) (Paragon Lost)
The M-96 Mattock in Paragon Lost punches through a decent amount of rock. (source) (Paragon Lost)
The Adas Anti-Synthetic Rifle fires electrical attacks at medium to long range. (3)
The Chakram Launcher fires lightweight ammunition discs that explode on impact. (3)
The Geth Pulse Rifle fires lightweight slugs wrapped in a plastic envelope. (3)
The Phaestorm has kickback dampers for each shot, allowing more punch than other weapons its size. (2)
The Striker Assault Rifle fires high impact slugs that detonate on contact with increased rate of fire. (3)
Shepard’s pistol shoots through a pipe containing flammable gas and ignites it with a second shot. (source) (2)
Shepard’s pistol shoots through a window bordering a vacuum. (source) (1)
In the novels, pistol rounds at point blank blast through a krogan’s head and go through a quarian’s head lodging in a shuttle’s bulkhead. (source) (Revelation 191)
The M-3 Predator blows apart the head of a LOKI Mech. (source) (2)
The M-5 Phalanx heavy pistol has no loss of stopping power compared to a soldier’s assault rifle and comes with a laser sight. (2)
The M-6 Carnifex in Paragon Lost causes a ceiling to collapse with multiple shots. (source) (Paragon Lost)
The M-11 Suppressor is a specialized silenced pistol; silenced pistols are barely audible at close range. (source) (Revelation 186)
The M-77 Paladin has superior firepower to the Carnifex, though with smaller clips. (3)
The Acolyte fires ammunition similar to a warp bomb, devastating shields and barriers. (3)
The Arc Pistol uses a laser to ionize air and create an electric shock that can be charged up. (3)
The Scorpion fires projectiles that stick to foes and explode, quickly bringing down Cerberus troops. (source) (3)
Assault Rifle Upgrades increase accuracy, damage, penetration, melee damage, etc. (source) (3)
Heavy Pistol Upgrades increase accuracy, damage, penetration, melee damage, etc. (source) (3)

Other Technology

Squadmate operates in hazardous environments for a limited time before taking damage, including high heat on Solcrum (351°C), Metgos (169°C), cold on Xawin (-131°C), high pressure on Sharjilla (39.16 atm), and toxins on Eletania inducing anaphylactic shock. (source) (Squadmate; 1)
Possesses barriers. (source) (3)
Squadmate hacks open a door. (source) (Squadmate; 3)
Squadmate disables a door lock. (source) (Squadmate; 3)
Squadmate repairs a broken bridge. (source) (Squadmate; 3)
Squadmate disables defense towers. (source) (Squadmate; 3)
Squadmate analyzes a dead quarian. (source) (Squadmate; 3)
Squadmate analyzes Reaper tech. (source) (Squadmate; 3)
Squadmate analyzes Shepard’s status. (source) (Squadmate; 3)
Squadmate disables an AA tower. (source) (Squadmate; 3)
Squadmate repairs AA guns. (source) (Squadmate; 3)

Prothean Physiology

Reads the chemistry of life through touch, sensing emotions, experiences, and imparting them; gets idea of Grunt’s species and capabilities by touching the floor of his room. (source) (3)
Senses Shepard’s emotions and thoughts about the Reaper war by touching him, then sees their memory of the Prothean beacon. (source) (3)
Learns Shepard’s language with a touch, while Shepard sees Javik’s last memories before cryo sleep. (source) (3)
Tells Shepard and Tali are in a relationship. (source) (3)
Reads a hanar to identify its species. (source) (3)
Senses Jack’s pain and anger exploring her former quarters. (source) (3)
Senses information about several of Shepard’s squadmates exploring the ship, describing it as natural as breathing. (source) (3)
Reads an asari’s emotions and uses that to convince her to stay and fight. (source) (3)
Stores and retrieves memories from an echo shard. (source) (3)
Participates in staring contests that last for hours. (source) (3)
Claims to see Kasumi despite her cloaking. (source) (3)
Senses a nearby Prothean beacon. (source) (3)

Physicals Skill

Hunted by indoctrinated crew for years, finally finishing them off with his knife in a final battle. (source) (3)
Rapidly guns down several Collectors. (source) (3)
Shoots a fleeing Brooks. (source) (3)
Squadmate shoots a Citadel chandelier from a decent distance to give Shepard an opening. (source) (Squadmate; 3)
Squadmate disables the arm of an Atlas mech with shots. (source) (Squadmate; 3)
Squadmate shoots an artifact from a decent distance. (source) (Squadmate; 3)
Squadmate guns down several Cannibals. (source) (Squadmate; 3)
Squadmate guns down multiple Husks and then more. (source) (Squadmate; 3)
Engages in serious overkill. (source) (3)
Squadmate has several laser dots pointed at chest and comes out unharmed. (source) (Squadmate; 3)
Squadmate aids soldiers against Reaper troops and keeps them alive. (source) (Squadmate; 3)
During Citadel Archives fight, claims higher kill count than everyone else combined. (source) (3)

Physicals Strength

Squadmate punches out a Geth platform. (source) (Squadmate; 3)
Squadmate pushes open elevator doors. (source) (Squadmate; 3)

Physicals Speed

Squadmate makes it out of a dreadnought cannon before it fires. (source) (Squadmate; 3)
Squadmate avoids a cave-in. (source) (Squadmate; 3)
Squadmate makes a decent leap onto a shuttle. (source) (Squadmate; 3)
Squadmate leaps from a moving shuttle onto a platform. (source) (Squadmate; 3)

Physicals Durability

Squadmate blown back by crashing Turian fighter and gets right back up. (source) (Squadmate; 3)
Squadmate blown back by bomb explosion that injures a nearby Salarian and gets right back up. (source) (Squadmate; 3)
Squadmate thrown into Liara and at close range to gunship missiles, okay but limping. (source) (Squadmate; 3)
Squadmate takes a several-story fall. (source) (Squadmate; 3)
Squadmate takes a decent drop and keeps running. (source) (Squadmate; 3)
Squadmate goes tumbling into a sinkhole. (source) (Squadmate; 3)
Squadmate walks off a skycar crash. (source) (Squadmate; 3)
Squadmate falls after Reaper collapses the bridge. (source) (Squadmate; 3)
Squadmate blown back by close-range explosion. (source) (Squadmate; 3)
Squadmate caught in an explosion. (source) (Squadmate; 3)
Squadmate caught in Mako explosion, left badly injured. (source) (Squadmate; 3)