This alien dude’s name is Gaar. It’s a nickname since his real name isn’t really pronounceable, at least to humans. (it would probably sound like a gurgled screech…like the sound someone would make if you dropped a bowling ball on their foot)
He sort of looks like a grouchy meathead but he’s really pretty friendly and very intelligent. I haven’t really developed his species that well but I was thinking he would have evolved from amphibious roots and still retains a small vestigial tail and gills.