Art of Tikal The Echidna (Sonic Adventure) and Tekno The Canary (Sonic The Comic).
Tikal's appearance is a bit different than in Sonic Adventure, as she has a more ghostly appareance with a typical ghost tail instead of having legs, hands with 3 pointy, almost claw like fingers and eyes similar to the boom boos from SA2.
Tekno is holding her gizmo, and seems to be explaining something tecnological to Tikal, there's a speech bubble from her that shows scribbly fake words and some images like a chaos emerald, the phantom ruby and others. Tikal's expression seems curious, if a bit confused.
Commision done for @blahokazooie.bsky.social! #sonicart #stc #commissionsopen #art #rosemaryart