I really like a lightner-darkner swap monster Tenna being a myrmecolion or antlion, based on his cat-like sphinx version and his concept art ant features. >As a bonus, the real antlion creates traps for its prey in sand, which is like how Tenna ensnares his employees in unfair contracts
>It would also be a neat parallel to the Dreemurrs being chimeric monsters with goat/sheep but also some lion features
>Tenna could have a nose or snout close to his canon one but have a fuzzy mane styled in an angular way resembling his canon TV head. Or maybe a helmet in his "Dark World" battle form