StarCraft II: Wings of Liberty/Heroes

Jim Raynor
A super powered up version of the marine with many abilities. His abilities include a sniper round that does deadly damage, grenades that does good against swarms, a chrono rift device and a plasma gun.

Tychus J. Findlay
Born on October 20th, 2468 on Mar Sara, Tychus J. Findlay is a marine who was once imprisoned and then released back into duty. The 6'7" blue eyed, grey haired, 363 lb man has a large record of criminal activity, including: theft, jailbreaking, insubordination, piracy, grand larceny and murder. After being incarcerated, his death sentence was suspended in favor of a lifetime service in the Terran Marine Corp.  Unable to change, Findlay once again was punished and sent into cryogenic confinement.  With his term of isolation coming to an end, Tychus will again return to the Marine Corp.  "Hell, it's about time."

Tychus is a powerful Marine that does splash damage with his chaingun while he is a pilot in the Odin walker.

Swann
This guy is a powerful Marauder that can deploy the Flaming Betty.

Nova
The strongest ghost unit. Nova can control any enemy unit and has a powerful snipe attack that kills almost all infantry in one shot. She is permanently cloaked, has a powerful nuke that does 750 damage plus an additional 500 to structures.

Tosh
The most deadly Spectre in history. He can stun enemies with mindblast, drain life to gain energy and activate a shield for defense.

Stetmann
A Scientist and a super version of the medic. He can heal himselft fast and heals 25 HP per 1 energy.

Ariel
A doctor that cares for her people. If the player picks protect the colony she will give Raynor a goodbye kiss but if the player picks purify the colony she will be infested and Raynor will be forced to kill her.

Artanis
This protoss is now a mothership commander instead of a scout pilot. In Legacy of the Void he wields twilight blades and can do lightning dash and upon death can revive his health.

Taldarim Executor
Commands a large and powerful mothership that constantly warps in more protoss units.

Selendis
The High executor that prefers commanding a Carrier.

Urun
This hero uses a more powerful version of the phoenix.

Karass
A High templar that can restore 50 points of shields and do psionic storms. Was killed by Kerrigans Zerg in the campaign.

Tassadar
This character is now a ghost.

Mohandar
Mohandar commands a powerful void ray that charges its prismatic beam a lot faster than the normal void rays.

Zeratul
Powerful Dark templar warrior known to do Void prison and blink across gaps.

Vorazun
Matriarch of the Nerazim that wields a warp scythe instead of a warp blade.

Alarak
High lord of the Taldarim that wield destructive powers.

Kerrigan
The most dangerous hero unit in the game. She can kill any Terran vehicle and aircraft in one attack, she has high health, she has various powers and she can attack air and ground with a psionic blast. Even cloaked banshees are not able to hide from her psionic powers. She is more powerful than Artanis's mothership and shes a one woman army.

Stunning her with the Thors ability and the use of the yamato cannon is your only hope against her.

Leviathan
A massive air unit that is bigger than even Motherships and has a variety of abilities including dropping mutalisks and Brood lord cocoons and stunning groups of enemies.

Brutalisk
Rarely seen but it is deadly against every air and ground unit in the game.

Char Queen
A special Queen seen in mission Belly of the Beast. It makes eggs hatch to cause trouble and it must be killed or the Queen will destroy the Charge planted in its lair.

Maar
A zerg and protoss hybrid that possess many abilities and can attack air and ground units. It is one monster that can detect dark templars and only immortals can defeat this thing.

Amon
The Starcraft II games true main villain that is a fallen Xel Naga that seeks to eradicate all life across the universe. He Took control of the zerg, use hybrids to take control of Moebius Corps and any protoss that did not sever their nerve cords. In the end he was no match for Kerrigan who became a Xel Naga.