Robot Overview by Role

Damage

Agro: Degreaser, Scorch shot, Maul
Airblaster: Flamethrower, Flaregun, Faster Airblast
Artillery: Rapid Long Range Artillery
B4Nny: Scattergun
Backscatter: Mini-Crits on conditions
Bazookajoe2002: Mass Rapid-fire Bazooka
Big Joey: Tomislav
Black Knight: Increased Range Rake + HP Restore on kill
Boxing Champ: Crouch Dash Killing Gloves of Boxing
Buff Bot: Buff-Banner
Captitan Concho: Increased Healing Concheror
Carpet Bomber: Cluster Bomb Grenades
Centurion: Anti Healer: Crits vs Heal Third Degree
Cloaker: Banner: Cloaks teammates until next attack
Dewill: Rapid-Fire Airstrike
Dr Grordbot: Electro Ball, Cow Mangler
Dreysidel: Mass Scottish Resistance
Expl-Odin: Grenade Launcher Launcher
Fire Wizard: Throw Fireball, Crit on burning melee
Firelord: Wide Fire Explosion on burning enemies
Firewall: Overheating increases damage, Pierces resistances
Flycharger: Fly Charge, Shadowstep Demoknight
Funke: Cleaver + Batsaber Combo
Gunslinger: Instant Weapon Switch, Stock Loadout
Heatsink: Slap Ring Fire
Higps: Deflect Projectiles
Icebear: Rapid Rocket Launcher Specialist
Ivory: Self Detonate MIRV Rocket Launcher
Kappy: Rapid Remote Control Rocket Bombardment
Led: Rapid Grenade Launcher
Laugh Extractor: AOE Scare ability, Backburner
Lister: Dragon's Fury, Powerjack
Mecha Face: Rapid Fire Baby Face's Blaster
Mortar Mack: Mass Multi-Shot Pipes
Phase Bomber: Bomb Spawning Charge
Quickler: Long Range Sticky Bombardment
Rager: Pushback Rage
Raid: Rapid Short Range Iron Bomber
Riotcop: 1 Shot Power Panic Attack
Robo-Knight: Eyelander, Chargin' Targe
Samwiz: Explosive Banana Ability Brass Beast
Shounic: Controlable Rocket Launcher Launcher
Solarlight: Hybrid Knight
Stickler: Large Radius Sticky Bomb, self crit canteen
Sultan: Persian Persuader, Splendid Screen
Volcanyro: Gas Passer, AOE Boom Sharpened Volcano Fragment
Wamo: Heal on Use Phlogistinator, Manmelter
Zip Bomb: Infinite Melee and Throw Caber
Zero G: No Gravity Body & Stickies

Disruptor

Astrobot: Low Gravity Pyro
Bonk Scout: Bonk + Rapid Multi Ball Sandman
Elmaxo: The Original, Market Gardner
Fan Scout: High Knockback Force-A-Nature
Hoovy: Perma-crit Holiday Punch
Kristianma: Rapid Detonator, Axtinguisher
Paint Can Huey: Support Battalion's Backup
Samureye: Half-Zatoichi, Splendid Screen
Toofty: Iron Bomber, Sticky jumper

Engineer

Barricade: High Health Buildings, Weak LVL 3 sentry, Shotgun, Southern Hospitality
Brainiac: Warp to teammate ability , Rescue Ranger, Eureka Effect
Gnome: Throw your buildings, Frontier Justice
Nofungineer: Remote Control Sentry, High Damage Short Circuit
Uncle Dane: Widowmaker, Wrench, LVL 3 Sentry
Wrangler Bill: Wrangler, Rapid-fire mini-sentry
Zonical: Quick-draw Pistol, Gunslinger

Healer

Array Seven: Kritzkrieg, Self Kritz
Blood Bandit: Vampire Uber
Dr. Crossbow Cop: Rapid-fire Strength Buff Crossbow
Mini-Medic: Rapid Overheal Mini-Medic
Quick-Shielder: Quickfix + MvM Shield
Robovich: Rapid Sandvich tosser
Rust Repair: Vita-Saw Medic Melee Healer
Sentro: Long range AOE Heal uber + Fireball spell
Skymin Slash: Damage Reflect Vaccinator
Theory-Y: Multi-buff Vaccinator

Sentry Buster

Bulldozer: Thermal Thruster + Homewrecker
Bursty: Burst-fire Direct Hit
Loch'N Larry: Rapid-fire Loch-n-Load

Sniper

Carbine Cassidy: Headshot Carbine (very difficult)
Crocotron: AOE Sydney Sleeper, Danger Shield, Kukri
Huntsbot: Penetrating Huntsman. On Kill: MVM Defense buff to self and team
Jbird: Explosive Headshot, Cozy Camper, Shahanshah
Skeeter: Knockback Sniper, Heal Team half of damage dealt
Spaceguyonline: Mini-Crits Teammates On Kill

Spy

Black Shiv: Grappling hook, Silent Killer
Gambler: Gamble Ability, are you lucky?
Jontohil2: Explosive backstab, Revolver
Mrpaladin: On Backstab: Turn Invisible until next attack
Ninja: Tiny Ninja Bot
Stabbystabby: Rapid-fire kunai
Warper: Warp to last target hit or self

Tank

Bearded Expense: Taunt: Leap Ability
Big Chief: Aimable Leap, High Heal on Kill
Burglar: Gain class buffs on enemy hit. Counter uber chains. Immune to tickles
Executioner: High Damage Skull Cutter
Megaton: Knockback Fists of Steel. Increase Max HP on damage done. Bonus Damage based off enemy HP
Terminator: Terminate specific players

ZBOSS

General Crits: Crit Rockets
Kommisar Krit: Crit Minigun
Saxtron: Saxtron Hale
Skilltron: Rapid Airblast
Smoker: Massive Nuke Shot