|Eye color||Pale green|
|Abilities||·Can expel acid-like substance out small pores back that crystallize in sunlight.|
|Last appearance||"Enemies Mine"|
|Images | Quotes|
The Frog EVO is a large EVO that most likely use to be a frog. He was confined by Providence.
It first appeared in the basement of a resident in Brooklyn. It was being "taken care of" by Rombauer and Lansky. Rex stepped in to save them the trouble. It later set up a nest in the New York subway where the fungus it was massively producing turned into a nearly indestructible crystal once it was exposed to light. it was finally defeated by the EVO Guys and brought to Providence, who confined it. 
As a prison break at a Providence facility took place, the Frog EVO was trying to escape. He encountered Rex, and Rex defeated him; preventing it's escape.
The Frog EVO has the uncanny ability to spew a strange acidic, thick green liquid out of the pores on its back. However, the liquid doesn't appear to hurt it. When exposed to sunlight, the green liquid forms into a indestructible purple crystal.
- 210. "Moonlighting"
- 317. "Enemies Mine"