Tikal

Name: Tikal
Nickname: none
Age: Unknown
Species: Ecidna

First Game: Sonic Adventure (SEGA Dreamcast)

Tikal is an Ecidna from anchient times. She sealed chaos inside the Master Emerald and her heart was sealed there as well.
No on knows just how old she is but in the BGS games she is said to have lived 1500 years ago.