In-game, Sensei is the player's self-insert, allowing players to imagine any appearance they want for them. However, there are two notable instances of a "canon" appearance for Sensei: Arona once depicted Sensei as a crude, smiling character on Arona Channel, a depiction that became popular throughout the fandom. Arona would reuse this depiction of Sensei when she baked cookies showing her and Sensei together holding hands.