Arthur is a mysterious older and experienced space captain who has ended up in Midwich Valley for--currently--unknown reasons. He has shown traumatically dismissive responses when confronted with the possibility of entering a commanding or leadership position which seems to be tied to the deaths of his space crew and a betrayal by some rogue space pirates. He has joined the Battle Royale for a chance to escape and meet up with his daughter. To do that, he has teams up with the android, Oscar, and has become somewhat of a father-figure to him. 

His voice is that of an experience, gruff ex-captain. Seemingly no-nonsense but has a soft spot for protecting kids and the community he currently finds himself residing in. Serious, commanding, stern but friendly are the good descriptors to keep in mind. 

Image reference of the character.