Wilhelm

“	Wilhelm. Galaxy famous mercenary. Undefeated warrior. After an injury forced him to get a replacement mechanical eye, he becomes obsessed with the idea of upgrading through technology. When Jack offers him access to the greatest augmentation technology Hyperion has to offer, he joins without hesitation, oblivious to the loss of humanity he has doomed himself to.	„
	— Matt Armstrong, Borderlands Franchise Director

Wilhelm can summon two drones with his action skill named Wolf and Saint. Wolf brings the offensive firepower while Saint can charge Wilhelm’s health and shields. Both can be recalled early to reduce the cool down timer.

Power up Wolf, get more defensive help from Saint, or go full cyborg by choosing the right tree for Wilhelm.

Hunter-Killer

Buffs to Wolf is what the Hunter-Killer tree is all about. Increased damage, air speed, and added targeting controls for Wolf fill the tree. The capstone “Omega Strike” adds missiles to Wolf when the action skill is enabled.

Cyber Commando

Watch Wilhelm’s transformation to cyborg badass by spending points in the Cyber Commando tree. “Power Fist” replaces his arm with a cyborg fist, which extends your melee range. “Shock Absorbers” enhances his legs robotically so you can shoot while sprinting. The capstone “Vengeance Cannon” makes use of his shoulder mounted cannon that fires lasers.

Dreadnought

Shield boosts and decreased cool down durations for Wolf and Saint are the highlight of the Dreadnought tree. Saint can deploy a large healing zone for your whole party to use with “Zero Hour”. The capstone “Overcharge” buffs movement speed, fire rates, reloads speed, and ammo regeneration for your entire party.

Skills

Wolf and Saint - Action Skill. Press [LB/L1/F] to summon Wolf and Saint, your trusty combat drones. Wolf will roam and attack enemies, while Saint will stay close to you and replenish your Health. Saint has a protective shield, but Wolf can be damaged by enemies. Press and hold [LB/L1/F] to recall Wolf and Saint and have some of your Cooldown refunded.

• Next Level:
  • Cooldown: 42 seconds
  • Duration: 35 seconds
  • Saint regenerates 2.5% of your Max Health / sec.

Dreadnought

Auxiliary Tanks - Increases Wolf and Saint's Duration and Cooldown Rate.

• Next Level:
  • Wolf and Saint Duration: +2 seconds
  • Wolf and Saint Cooldown Rate: +3%

Fortify - Increases Max Health for you and Wolf. Additionally, while Saint is active you deal increased Damage with all gun types.

• Next Level:
  • Maximum Health: +3%
  • Wolf Maximum Health: +3%
  • Gun Damage: +4%

Energize - Saint Ability. Saint will occasionally boost the Shields of you and your friends. Additionally, Saint gains an increase to the rate which he regenerates your health.

• • Occasionally restores : +0% of shield capacity
• Next Level:
  • Occasionally restores : +8% of shield capacity
  • Saint regenerates: +0.6% of your Max Health / sec.

Heatsinks - Improves Shield Recharge Rate and Shield Recharge Delay. This bonus is doubled while Wolf and Saint are on cooldown.

• Next Level:
  • Shield Recharge Rate: +6%
  • Shield Recharge Delay: -4%

Termination Protocols - Fight For Your Life is replaced by Termination Protocols. During Termination Protocols you can walk at a reduced speed, fire your weapons, and you constantly shock nearby enemies. If the timer runs out, your power core goes critical, releasing a Nuclear Explosion.

• Next Level:
  • "I absolutely will not stop, ever, until you are dead."

Rapid Reinforcement - Kill Skill. Killing an enemy increases your Cooldown Rate for Wolf and Saint and increases your Movement Speed and Reload Speed for a short time.

• Next Level:
  • Movement Speed: +3%
  • Reload Speed: +8%
  • Action Skill Cooldown Rate: +4%

Zero Hour - Saint Ability. When Saint is recalled or expires, he explodes, deploying a Healing Zone underneath you. You and your friends Regenerate Health while standing in the zone.

• Next Level:
  • Healing Zone Duration: 12.0 seconds
  • Regenerates 8.0% of your Max Health / sec.

Hazmat Containment System - If you have a Incendiary, Shock, or Corrosive Status Effect on you, you and your friends gain increased Resistance to that element. Additionally, you will occasionally spread that Status Effect to nearby enemies while it's active.

• Next Level:
  • Elemental Resistance: +17%

Kinetic Armor - Increases your Maximum Health. Additionally, close range attackers have a chance to be struck by Explosive Feedback. The closer the enemy is to you the more likely he is to be struck.

• Next Level:
  • Maximum Health: +5%
  • Explosive Feedback: Up to 5% chance

Hard To Kill - Whenever you are shot or struck by an enemy, you gain a stack of Hard To Kill, reducing all Damage received. All stacks are removed after a few seconds of taking no damage.

• Next Level:
  • Damage Reduction: 0.1% per stack
  • Max Stacks: 100

Overcharge - Saint Ability. Immediately after being summoned, Saint will release an Energy Wave that will Overcharge you and any nearby friends for a short duration. Overcharged players gain increased Movement Speed, Fire Rate, Reload Speed, and Ammo Regeneration.

• Next Level:
  • Movement Speed: +15%
  • Reload Speed: +75%
  • Fire Rate: +75%
  • Ammo Regeneration: +10
  • Duration: 10 seconds

Cyber Commando

Laser Focus - Increases Gun Damage and Magazine Size with all Laser Weapons.

• Next Level:
  • Laser Damage: +4%
  • Laser Magazine Size: +4

Man and Machine - Increases Shield Capacity and Maximum Health for you and Wolf.

• Next Level:
  • Shield Capacity: +3%
  • Maximum Health: +3%
  • Wolf Shield Capacity: +5%
  • Wolf Maximum Health: +5%

First to Fight - Increases your Gun Damage. This bonus is lost 5 seconds after you deal damage, and is regained after 5 seconds of you not dealing or taking damage.

• Next Level:
  • Gun Damage: +8%

Targeting Scope - Kill Skill. Killing an enemy gives you increased Accuracy and Critical Damage for a few seconds.

• Next Level:
  • Critical Damage: +10%
  • Accuracy: +5%

Power Fist - Cyborg Augmentation: Arm.
Melee Override. Press (RS/V) to perform an explosive punch with extended range. This ability has a cooldown.

• Next Level:
  • Cooldown: 12 seconds
  • "I am now authorized to use physical force."

Emergency Response - Emergency Response is activated whenever your Shield becomes depleted, increasing your Fire Rate and Reload Speed, and Wolf's Fire Rate, for a short duration. Your Shield must fully recharge between activations.

• • Reload Speed: +5%
  • Fire Rate: +5%
  • Wolf Fire Rate: +0%
  • Duration: 15 seconds
• Next Level:
  • Reload Speed: +10%
  • Fire Rate: +10%
  • Wolf Fire Rate: +10%
  • Duration: 15 seconds

Shock Absorbers - Cyborg Augmentation: Legs.
You can shoot while Sprinting. While doing so, you gain bonus Gun Damage, and suffer no accuracy penalties.

• Next Level:
  • Gun Damage: +20%

Divert Power - When your Shields are depleted and your Health is low, taking Damage causes you to gain massive Shield Regeneration and Damage Resistance for a few seconds. This ability has a cooldown.

• • Health Threshold: 30%
  • Cooldown: 25 seconds
  • Duration: 3 seconds
  • Damage Resistance: +NaN%
  • Recharges 0% of your shield
• Next Level:
  • Health Threshold: 30%
  • Cooldown: 25 seconds
  • Duration: 3 seconds
  • Damage Resistance: +50%
  • Recharges 20% of your shield

Meteor Slam - Increases the Damage Radius of your Slam ability.

• • Slam Radius: Rank 0
• Next Level:
  • Slam Radius: Rank 1

Welcome to the Gun Show - You are better with guns in nearly every regard. Increases Gun Damage, Reload Speed, Magazine Size, Accuracy, and reduces Recoil.

• Next Level:
  • Weapon Damage: +3%
  • Reload Speed: +3%
  • Magazine Size: +3%
  • Accuracy: +3%
  • Recoil Reduction: +3%

Vengeance Cannon - Cyborg Augmentation: Weapon.
Whenever your Shield becomes depleted, you activate your shoulder-mounted Vengeance Cannon. The Vengeance Cannon fires Incendiary Laser Blasts in tandem with your equipped weapon and lasts for a short period of time. Your Shield must fully recharge between activations.

• Next Level:
  • Active Duration: 12 seconds.

Hunter-Killer

Afterburner - Wolf's Air Speed is increased. Additionally, your Reload Speed and Projectile Speed is increased.

• Next Level:
  • Wolf Air Speed: +6%
  • Reload Speed: +5%
  • Projectile Speed: +5%

Fire Support - Increases your Damage with all gun types and increases the Damage dealt by Wolf.

• Next Level:
  • Weapon Damage: +3%
  • Wolf Damage: +5%

Venom Bolts - Wolf Ability. Wolf's shots have a chance to be Venom Bolts, which deal Corrosive Damage. Additionally, you gain increased Corrode Chance and Corrode Damage with guns and grenades.

• • Venom Bolt Change: +5%
  • Corrode Change: +0%
  • Corrode Damage: +0%
• Next Level:
  • Venom Bolt Change: +10%
  • Corrode Change: +2%
  • Corrode Damage: +4%

Suppression - Kill Skill. Killing an enemy gives you and Wolf increased Fire Rate for a short time.

• Next Level:
  • Fire Rate: +6%
  • Wolf Fire Rate: +15%

Laser Guided - When you activate Wolf and Saint, or press [LB/L1/F] while they are active, Saint will Paint the target under your reticle. Wolf will focus attacks on the currently Painted target, and the target will receive increased Damage from all sources. If a target is killed while Painted, time will be added to Wolf and Saint's Duration.

• Next Level:
  • Target Damage Received: +25%
  • Wolf and Saint Duration on Kill: +5 seconds

Rolling Thunder - While Wolf is alive, you will periodically gain stacks of Rolling Thunder, increasing Wolf's Damage.

• • Stack Interval: 5.0 seconds
• Next Level:
  • Wolf Damage: 2% per stack
  • Stack Interval: 5.0 seconds

Kill Switch - Wolf Ability. Whenever Wolf is recalled, runs out of Health, or expires, it will dive bomb enemies with explosive effect!

• Next Level:
  • "The Divine Wind blows up."

Scramble - When Wolf is destroyed, it is replaced once for free, and time will be added to Wolf and Saint's Duration.

• • Deployment Time Added: 25%
• Next Level:
  • Deployment Time Added: 30%

Cold War - When you apply a Shock, Incendiary, or Corrosive status effect to an enemy, there is a chance for the target to freeze. Additionally, you gain increased status effect chance when using Cryo weapons.

• Next Level:
  • Freeze Chance : +5%
  • Cryo Weapon Freeze Chance: +2%

Escalation - Increases your Critical Hit Damage. Additionally, Critical Hits on enemies reduce the remaining Cooldown of Wolf and Saint by a small amount. This effect has a cooldown.

• • Cooldown: 6.0 seconds
• Next Level:
  • Critical Hit Damage: +5%
  • Cooldown Reduction: 0.6 seconds
  • Cooldown: 6.0 seconds

Omega Strike - Wolf Ability. Wolf periodically launches a deadly missile strike against its targets.

• Next Level:
  • "Too close for guns, I’m switching to missiles."

In Borderlands 2

Wilhelm is a Hyperion Loader Boss. He appears on the A Train to Catch quest shortly after derailing the train. The original vault hunters continue to claim how they ran into Wilhelm and barely survived.