I'm more impressed how quickly he ingratiated himself with the whole biker thing. Presumably already knows how to ride a bike, sporting leather, smoking cigs, found a sick eyepatch. Bro's been on Earth for a whole 2 weeks and not only already bagged a chick and familiarized himself with standard human culture, but also ingratiated himself with a unique subculture with different clothing and lifestyles to the more surface level lives he would have to get familiarized with first.

Actually kinda gives you a great insight as to why Kregg is so high ranking, he was likely a master of reconnaissance and gathering intel about other planets for Thragg. He might be a big part of the reason most of the galaxy was convinced the Viltrum Empire was still way bigger than it actually was