Most of Wheelo's personality is revealed in his interaction to Kochin, one of the only other sentient beings available for socialize with. The movie itself, both in it's dubbed version and the original Japanese does not define if Kochin was originally human or an entirely fabricated artificial intelligence created by Wheelo. Regardless of Kochin's actual nature, Wheelo treats him purely as a tool - showing no concern over his well-being when exposed to pain and actively throwing him to his death