Your real nature is Lonely, but you're just in denial right now, kay? Kay. But Serious works just as well.
Tonn's a sad little thing that could really use some love. He's got a good amount of issues to make him a miserable oaf for a lifetime, from his parents dying in a forest fire to his human owner dying on him too, only to come back as a ghost to haunt him forever. Too bad she's become a total jerk now, otherwise he could get that special hug he's always wanted.
He's very good friends with Skree, though, but he still can't completely trust someone.
Tonn hates sweet food by the way.