This is a very cute pokemon concept by Conseqq https://www.furaffinity.net/user/conseqq/

Name: Cotton
Species: (Pokémon) Feral mouse (Pikachu)
Type(s): Candy, Love, Fairy

He likes to drink anything with sugar in it, his favorite being energy drinks and fizzy orange sodas.

Because of evolution, he doesn't need to reproduce, but in turn has been able to live for as long as they continue consuming sugar, and breathing air. This is possible because of their ability to reverse-photosynthesize. They consume sugar and oxygen, in order to internally process it back into sunlight and water.

The sunlight can be released by using Solar Beam, which they don't need to charge for as they're constantly processing solar energy, or by transferring the solar energy into the flora around them, causing rapid growth until they have balanced the amount of energy inside them back to normal levels. Water is also consumed in this process.

Alternatively, to balance their water storage out, they can let nature take it's course and piddle somewhere, or focus it into a powerful water-based move; Water Spout.

Art by me :)