Tikal the Echidna is a girl from Knuckles's past. She originally appears from Sonic Adventure and and the comic series published by Archie Comics. Knuckles keeps seeing her while trying to find out about his forgotten past. She was seen attacked by the Echidna Clan for disagreeing with her father Pachacamac's violent ways, but whether she died or survived is unknown.
Tikal is a kind and happy girl who likes birds and nature. She is a pacifist who dislikes violence, which led her to be attacked by the Echidna Clan.