Drekk

Drekk is a criminal alien that that has both super strength and the ability to shoot lava from his hands. He was, at one time, Frank's cellmate in prison and is one of the main villains of MIB. He has a very bad temper and has an obsession of getting revenge on anyone who messes with him.

Animated series
He first appears in The Dog Eat Dog Syndrome after he escapes out of his prison. He lands on Earth to find his old friend Frank but he says that he is supposed to be best friends when Jay and Kay catch him, but he escapes anew and catches Frank but Frank proposes to help him in his plan of revenge with Jay and Kay when he pretends to kill them in their arrest.

He returns in The Black Christmas Syndrome in company of an army's strange alien, he kidnaps Santa Claus but MIB saves Santa and destroys his plan.

Returns more later in The Breaking News Syndrome to cause trouble.