>>34548609around 7 years ago I had this concept of a poison frog evolution tree. It starts out as a kunai-shaped tadpole(poison). It becomes a poison ninja frog that can learn stun spore, sleep powder, and poison powder. If it levels up knowing one of the three moves, it evolves.
With stun spore, the ninja frog becomes a poison/electric physical attacker with the ability static. The ninja frog will have a sumo wrestler disguise, with a big throat like a bullfrog making it look like it has a big belly like a sumo wrestler.
With sleep powder, it becomes a poison/psychic special attacker with the ability inner focus. The ninja frog will have a monk disguise, with bumps around its neck looking like prayer beads.
With poison powder it becomes a fast poison/dark with the ability poison touch. Its black skin would be smooth and resemble a black ninja garb. I guess now it would look like a copy of greninja