While Nova was working on his garden, he came across a pack of dolphins and tried riding one saying, "I wanna tame you! C'mon!" when it gave him the choice to name the dolphin. He was about to name it when he started getting poisoned. He frantically tried to get off and typed "s". When he got off the dolphin, it had a health bar and was named. In episode 80, according to Nova, he went down to check on S but there was no sign of him. S supposedly left him and vanished off into the sunset.
He had mentioned S again in a later episode, and mistakenly referred to him as "E".