Grunt

"I am pure krogan. You should be in awe."

Grunt is a genetically engineered krogan super soldier who appears in Mass Effect 2.

Grunt is voiced by Steve Blum.

Krogan Berserker

 * Rank 1
 * Health: +20.00%
 * Weapon Damage: +5.00%
 * Health Regeneration: 20.00 points per second


 * Rank 2
 * Health: +30.00%
 * Weapon Damage: +10.00%
 * Health Regeneration: 30.00 points per second


 * Rank 3
 * Health: +40.00%
 * Weapon Damage: +15.00%
 * Health Regeneration: 40.00 points per second


 * Rank 4 Unlocks choice between Krogan Pureblood or Krogan Warlord
 * Krogan Pureblood: Grunt's mastery of his blood rage increases his already fantastic regeneration rate, letting him survive wounds that would kill other krogan.
 * Health: +50.00%
 * Weapon Damage: +15.00%
 * Health Regeneration: 55.00 points per second
 * Krogan Warlord: Grunt can go berserk without losing his lethal focus, increasing his weapon damage.
 * Health: +50.00%
 * Weapon Damage: +25.00%
 * Health Regeneration: 40.00 points per second

Dossier
Originally, Commander Shepard was seeking Warlord Okeer to recruit for the fight against the Collectors, locating him on Korlus. After the Commander and Co. fight their way through Blue Suns mercenaries they arrive in Okeer's lab, finding him with his grand experiment: a krogan super soldier. Unfortunately, a Blue Suns gang leader, Jedore, vents poisonous gases into the lab, suffocating Okeer to death. After listening to Okeer's message, Shepard brings the krogan super soldier on board the Normandy and releases him from his tank. The krogan pins Shepard to a nearby wall and states his intention to kill the Commander, though he desired a name before doing so. He chooses "Grunt", because it was the last thing he heard from Okeer as he died and he considered it to be short and simple, though describing of his training and purpose. Grunt chooses not to kill Shepard if the Commander promised him a good fight, or if the Commander shoots him multiple times. However, even if no shots are fired it turns out that Shepard was actually holding a gun on Grunt the whole time.

Grunt approves of this.

Lacking the sense of personal honour other members of his race hold, Grunt is both violent and highly unpredictable, being known to charge recklessly into the midst of his foes, unlike more disciplined krogan fighters, such as Wrex, without Shepard's orders. Despite his reckless, unpredictable, and violent attitude, he is nonetheless considered a great asset to the mission thanks to his unsurpassed physical strength and fighting prowess.

Grunt often appears childlike and enthusiastic (particularly about violence and combat) in conversation with Shepard. He also seeks guidance from Shepard due to a combination of his young age, lack of krogan guidance and no history (having spent his entire life in a tank). Before his rite of passage, when asked who his krantt is, the people willing to fight, die and kill for him, Grunt will look directly towards Shepard.

It is possible to fail to persuade Grunt to join the party if Shepard is not careful with dialogue options after waking him up, resulting in Shepard killing the krogan.

You can also choose not to release Grunt from his tank.

Loyalty: Rite of Passage
EDI or Kelly alerts Shepard that Grunt has become somewhat anxious, pacing back and forth in his room. Upon talking to him, Grunt will reveal his emotional state to Shepard, describing it as similar to krogan blood frenzy and being confused about how to handle it. EDI suggests visiting Tuchanka and consulting the Clan Leader there. The Clan Leader (Wrex, if he wasn't killed in the first game) explains that Grunt is simply undergoing puberty and must take part in the Rite of Passage to prove himself as a krogan and join a clan. Gatatog Uvenk objects to allowing a tank-bred abomination to undertake the Rite, but the Clan Shaman gives Grunt permission nonetheless. Shepard accompanies Grunt to the Rite as his krantt.

The Rite itself is a gauntlet of waves of wild fauna, including varren and klixen, and a thresher maw as a boss. It is required to survive the thresher maw fight for five minutes to complete the Rite; however, killing it before time runs out earns an achievement, respect among the krogan and several breeding requests for Grunt and one for Shepard. It is also revealed that the last krogan to kill a thresher maw in his rite was none other than Wrex.

Upon completing the rite, the squad will be confronted by Uvenk, who now seems impressed and accepting of the tank-bred Grunt. Shepard will have the options of talking him off or fighting him (or both, with sufficient Renegade score).

Soon afterwards, Grunt will refer to Shepard as his Battlemaster.

Suicide Mission
To ensure Grunt's survival, he should be loyal, and not in Shepard's Seeker swarm party unless the biotic is loyal. Having the krogan vitality upgrades also increases his chance of surviving.

It is advised that Grunt be left to hold the line during the final boss sequence, as his combat abilities play a role in ensuring the survival of the team as a whole.

Trivia

 * Grunt appears to be 4 to 5 inches taller than Shepard during the cutscene where Grunt was released from his tank. However, he is the same height as Shepard during in-game mode.
 * Grunt maybe a tribute to the Star Trek character Kahless the Unforgettable. In 'Rightful Heir' a TNG episode a Kahless clone is reated to unify the Klingon Empire while Grunt is made up of a mixture of DNA from historically prominent Krogan. Like Kahless he is supposed to be the pinnacle of his species that will united his people
 * Unlike other krogan, Grunt's crest is a series of small bony ridges rather than a single, large, coloured plate. Grunt is also the only krogan with blue eyes.
 * Like Legion, Shepard may research a special weapon for Grunt, a shotgun called the Custom Claymore. It is illegal by Citadel standards and it is noted that the recoil alone would shatter human bones.
 * There is a bug present in at least the Xbox 360 version where, even if Grunt is loyal, Fortification will not be unlocked. This issue is also present on the PC version; however, you are still able to learn this ability. Allegedly this issue has to deal with the Pyjack sidequest. If one does this quest before Grunt's loyalty mission, there is no skill lock.
 * On Omega, if Grunt is in your squad when you converse with the Blood Pack leader Garm at Archangel's base, he will ask Grunt why he follows Shepard and state that Grunt should be learning from his own kind. If asked why, Garm will respond, explaining so Grunt can learn from example, about how to live and die without fear and to put that fear into his enemies' hearts; Garm will then nonchalantly blow a vorcha's head off as a demonstration. Grunt responds that Shepard does all of this and more.
 * It would appear that Grunt is one of Shepard's most loyal squad members (in a sense). For instance, when Uvenk tries to recruit Grunt for Clan Gatatog, Grunt grows infuriated, claiming that Uvenk "spit on Shepard's name". Also, as he is choosing Shepard as his Battlemaster, Grunt says "(Shepard) has no match". On Horizon he also warns the mechanic "Show some respect if it weren't for Shepard you all would be in that ship".
 * Grunt is very unimpressed by Tuchanka, saying "This chunk of rock is barely worth standing on, never thought I'd miss the tank".
 * Despite early trailers depicting Shepard meeting Grunt on Omega, he is actually acquired on Korlus and awakened on the Normandy.
 * If Grunt is brought into the plagued area on Omega, he will begin to cough and state "I do not get sick". This occurs shortly after entering the zone, showing the plague's infectiousness and Grunt's disdain for weakness. Mordin Solus will heal him when the clinic is reached.
 * Strangely, for an agressive krogan, Grunt doesn't swear at all in Mass Effect 2 and is instead polite and well-mannered. Unlike the patient Wrex who swears occasionaly.