He's an aggressive introvert and has shown to be hostile, with outwardly selfish behaviors from time to time. He also shows no concern for those that aren't close to him. Cross would resort to violence even to the slightest problem. Despite his cold self on the outside to strangers, Cross has a soft spot for those who he cares on the inside, since he fell into some state of grief for losing his home and family after obliterating them, and resorted to hunt other universes to "bring them back."