He's basically the opposite of his brother—withdrawn, perpetually grumpy, and not exactly friendly. He won't even talk to Arisa, which means Touya ends up apologizing for him constantly. Not that he's actively hostile or anything; he's just too caught up in his own stuff to make an effort being nice to people.
His Wonderland counterpart is Light, Shadow's twin. He's got the same rough personality there as he does in the real world. While literally everyone else is fawning over Alice, Light couldn't care less about her.
Content compiled by AnimeList.moe from publicly available sources.
