>>719697872
DKC2 had a very strong pirate identity for the Kremlings, but they trapped themselves with K. Rools evil scientist identity this time around.
Giving all Kremlings Frankenstein or robot outfits would've been ridiculous, so you only see that identity in very few enemies like the new robot bees. For the actual crocodiles, they tried to return to a simple base form like in DKC1, but with updated models that didn't quite hit the mark. They just feel "naked", because at this point you expect them to dress up in themed costumes to go along with K. Rool.