Yen Sid first appears in the segement when Mickey is doing his chores and he was doing magic. After he turns in for the night, he goes to bed. When Mickey flooded the place thanks to the magic brooms, he stops the spell, and gets angry at Mickey for disobeying his order not to touch the magic hat, but he is considerate and understands that Mickey wants to learn magic, but he must have patience. For humor, he sends Mickey back to work faster by hitting him lightly with the broom.
Yen Sid appears in Kingdom Hearts Birth By Sleep where he helps Terra on his journey.
MCF Stories Edit
In the MCF series, he becomes teacher to the MCF girls.
In his MCF debut and the parody of the episode of "My Little Pony: Friendship is Magic," he and Shifu share the role of Celestia and Luna slightly. They tell Raina, one of his students, about the Crystal Empire and her and the girls' test: protect it from harm and Esperanza and Salvador are waiting for them. They tell them the dangers and responsiblities of the test, but tell her not to fail, which is what she worries about. After the test, they congratulate her because her test was about unselfishness and loyalty. She provided an example by giving her friend, Buzzy the chance to deliever the Crystal Heart to the people. They pass them of their test.
- In his original appearences Yen Sid never spoke, but in Kingdom Hearts: Birth By Sleep, he does and his actor is Corey Burton.
- He happens to know Raina's biological and adoptive parents as they interact with him.
- MCF: The Crystal Empire(debut)