Teslo is the mature and smart leader of the Electroids. Unlike his brothers, he is very daring in most situations, especially in Nixel attacks. He also treats them like students as he often teaches them about the concepts of electricity and mixing together. Despite that, he still cares about his fellow Electroids very much. Other than his nerdy tendencies, he is also athletic, evidenced when wearing an outdated exercise outfit while jogging. His fear of heights is not helped by his habitat.