Helioptile

 is a dual-type Type/ Type Pokémon.

It evolves into Heliolisk when exposed to a Sun Stone.

Biology
Helioptile is a bipedal, lizard-like Pokémon. It is primarily pale yellow with black paws and tail tip. The top of its head is also black with a triangular yellow marking on its forehead. It has blue eyes, a slightly pointed head, a tapering tail, and three toes on each foot. On either side of its head hangs a pointed, extension with a yellow tip. These can stiffen and expand into a frill.

These frills have cells that generate electricity when exposed to sunlight. This allows it to create its own energy and thrive without food in its desert home. The frills act similar to solar panels and it the source of Heiloptile's electric moves. However should this process get interrupted, Helioptile will be stressed to the point of weakness.