The Rakkman a boss enemy in Borderlands 2.
It is an Easter Egg, a reference to Batman
It is located in The Rakk Cave in The Fridge. You will get there during the side mission, The Cold Shoulder
Rakkman Orange Drop
A Gunerang, such as the Jam Packed Gunerang
Rakkman Gunerang Drop Rate
3.0%
Batman References
The Rakk Man lives in The Rakk Cave (Compare to Bat-Man's Batcave)
The Rakkman throws a Rakkarang at you (Similar to Batman's Batarang)
Rakkman uses a Smoke Bomb just like of of Batman's Gadgets
Rakkman summons a colony of Rakks to attack you, just like Batman has bats.
He says his parents are dead, just like Batman's (though he killed them himself, most likely)