Robacon

Robacon/Robroccoli
Robacon (or Robroccoli in vegetarian mode) is a robot found in Ye Olde Pub that provides attack support when you are fighting monsters, in exchange for bacon (or broccoli). He refuses to talk to you until you are at Rank 40.
Robacon starts at rank 1. Robacon must have a weapon equipped for him to have any effect. His weapon must have a rank requirement no higher than his rank. Unless the weapon is the bacon sword, Robacon must also have bacon (or broccoli) to attack.
If the above conditions are met, Robacon will attempt to attack any monster when it spawns, unless it is an evolving monster or would self-destruct upon being hit. Every attack uses a piece of bacon (or broccoli), unless he has the bacon sword equipped. When he attacks, a large strip of bacon (or stalk of broccoli) will cover the middle of the screen if he hits.
Robacon's attack may miss, based on your level penalty, hit chance, and accuracy. Robacon's attack uses your stats to determine damage, and the skill power multiplier, which is applied before defense, critical damage, (non-) boss damage, and mana power, is 0.5 + robaconRank/100 + robaconWeaponAttack/300.
Robacon gains 1.5 times the Arena EXP that you do (not accounting for the Rebirth bonus) making its weapon level up more quickly. Robacon will stop earning EXP once his rank is the same as yours.
The only stat on Robacon's weapon that matters is its attack, as detailed above. Additionally, the colored tiered bonuses on his weapon also apply to your character, so long as Robacon has bacon (or broccoli) and a high enough rank to use the weapon.
Robacon cannot enter Smiley Island, as he is unable to figure out the password. This means he cannot enter Tower of DOOOOOOM, either. His bonuses apply in Dark Pyramid and Spooky Crypt, even though he will attack only the first monster in the former and none in the latter.
===Robacon's Skills===
Robacon's Skills
Rank	Skill
50 	Robacon/Robroccoli raises your combo by 2 each time he attacks.
75 	Robacon/Robroccoli raises your Rage by 0.5% each time he attacks.
100 	Robacon/Robroccoli has a 25% chance to cause the monster to drop Enhancer Fragments.
125 	Robacon/Robroccoli is guaranteed to deal critical damage.
150 	Robacon/Robroccoli has a 25% chance to silence non-boss monsters
175 	Robacon/Robroccoli has a 25% chance to deal double damage.
200 	Robacon/Robroccoli has a 5% chance to cause the monster to drop Superior Crafting Material.
225 	Robacon/Robroccoli has a 5% chance to permanently blind the monster.
250 	Robacon/Robroccoli has a 5% chance to permanently poison the monster.
275 	Robacon/Robroccoli has a 5% chance to permanently weaken the monster.
300 	Robacon/Robroccoli recovers your HP by 25% of MaxHP whenever he attacks.
325 	Robacon/Robroccoli causes the monster to permanently lose 10% Evasion.
350 	Robacon/Robroccoli causes the monster to permanently lose 10% Defense.
375 	Robacon/Robroccoli causes the monster to permanently lose 10% Accuracy.
400 	Robacon/Robroccoli recovers your MP by 5% of MaxMP whenever he attacks.
425 	Robacon/Robroccoli causes the monster to permanently lose 10% Attack.
450 	Robacon/Robroccoli makes the monster give 10% more Coins.
475 	Robacon/Robroccoli makes the monster give 10% more Pixels.
500 	Robacon/Robroccoli makes the monster give 10% more EXP.
===Guide===
Toadvine's Robacon guide