I recognized so many voices as I played through. Ah, nostalgia. I looked them all up to see who all was in it, and I was pretty shocked to find out that almost all of them have some link to it. I guess Gearbox like Dragon Ball. CTRL+F to find a specific character.
Listing in alphabetical order (BL2DBZ):
Giran (DB), Cooler, General Rilldo (GT)
Flesh Stick, Shorty, Various
Elder Moori (DB Kai), Dolltaki (GT)
Mad Moxxi, Daisy
Puar, Chiaotzu (DB Kai)
Man 2, Robber 2, Stud Boy
Veanna Granlund, Various
Penny (DB: CotBR)
Bee, Naruto Shenron (GT)
Mal, Face McShooty
Shu (DB), Tien (Original Dub), Mr. Popo (Original Dub), Turtle (Original Dub), Rage Shenron (GT)
The first time I heard a Goliath, I immediately thought of Hercule, had no idea it was actually his VA until now, I didn't even recognize Eric Vale's voice in there at all, or Christopher Sabat's either, funny how that all works.