|First appearance||The Interference|
|Game||Kingdom Hearts II|
|Homeworld||Mysterious Tower, The World|
|Weapons and Abilities||High-level magic, conjuring, teleportation, Keyblade-wielding|
|Appears in||The Interference|
Yen Sid is a supporting character from the Kingdom Hearts series of games and a minor character in The Interference. He is an ex-Keyblade Master and the elderly mentor of King Mickey; making his original appearance in the film Fantasia with the same role.