Every time I try to go and fight Vermorous I can't get the Varkids to evolve to their last form. I always get the to Super Badass or Ultimate Badass if I'm lucky. I don't know what I'm doing wrong! Someone please shed some light on this.
Go with 3 other people, vastly increases your odds of spawning him, even though your chances are still meh then. Try your utmost to pod up a ton of adults at the same time then go hide in the barn in the Tundra express and hope that about 3 of them make it to ultimate badass. you're almost certain to get him then provided there's a crapton of other varkids around at that point.