Ellen is a witch who is eternally young. Due to the fact that she has lived so long, she has a hard time remembering things. She has long blonde hair and wears a red and white dress. She wears a red bow in her hair, and is never seen without her pet cat, Sokrates.
Touhou 03 - Phantasmagoria of Dim.DreamCharacter Profile
"★ Hardworking witch who dreams of love ... Ellen
～ Ellen is a witch who never grows old. To make up for it, she lives for a very long time.
She does not have a very good memory. She forgets big drops of memories, one after the other, she says.
Because of that, she is always a child.
(She is from Ha○raki○no.)
As such, Ellen is a splendid witch. She is still continuing to be useful for a very long time.
For today, she has fluffy, popping magic."
- Ellen is a cameo from Hatarakimono, a manga by Izumi Takemoto, who ZUN is a fan of.