Greenbeard (Maurice LaMarche in seasons 1-2) is the leader of a band of space pirates who seek out treasures left behind by their former owners or steal outright from starships unfortunate enough to cross their path. With a long coat, mechanical parrot, and peg leg, he also upholds many old traditions of classic pirates, including walking the plank and keelhauling.
- Galactic Pirates of the Corralean (Season One, Episode 120a)
- Ferried Treasure (Season Two, Episode 206a)
- Aarrgh...It Be 'Olidays! (Season Three, Episode 303a)
- He is a parody of Edward Teach a.k.a. Blackbeard.
- He has the voice of Yosemite Sam.