- Starlight Glimmer◊ from My Little Pony: Friendship Is Magic doing an Early-Pony Cameo.
- Ellen wasn't supposed to appear in El Goonish Shive until the next Story Arc, but she wanted to participate in the Milestone Celebration nonetheless.
- Vincent◊ shows up in Persona 3 Portable before the release of his own game, Catherine.
- A literal Early-Bird Cameo: Ho-Oh◊ appeared in the first episode of the Pokémon anime a full two years before the release of its generation.
- Yellow◊ Diamond◊ (second from the right) in the extended Steven Universe opening before her official debut◊.
Image Links / Early-Bird Cameo