Joshua appears the same as he did in The World Ends with You. He has medium-length ash blonde hair and dark, lavender colored eyes. He wears a white button down shirt open at the collar, dark grey pants, and white shoes with black shoelaces.
He is seen four times in the Jump Festa 2012 Trailer. He stated that Traverse Town was seemingly split into two parts. He was also talking to Riku about a world that is the same, yet different. In his third appearance in the trailer, he was asking Neku if he was giving up after he was wondering if they will go back to their original world. His fourth appearance was with Sora as he talks about how people are connected even though they are apart.
He was participating in the Reapers Game while he is still alive, making him an illegal player. It is then later revealed that Joshua is the Composer, and he killed Neku in order for him to be his proxy in the game himself and Kitaniji were playing. Supposedly, he would destroy Shibuya if he won, but because of Neku's personality change, he believes that Shibuya can change as well.
- "Give up on yourself, and you give up on the world," is a quote that Joshua says in The World Ends with You when he sacrifices himself to protect Neku from Sho Minamimoto.
- Joshua says "It appears that this world is like ours, seemingly split into two parts," most likely referring to that fact that in The World Ends with You, Shibuya is divided into two parts: the Realground and the Underground.