After the battle Grover and Frank became friends, probably because of their love of animals. When ever they wanted to talk to each other in private, Frank would turn into an animal so only Grover could understand him.
Grover and Frank
After the battle Grover and Frank became friends, probably because of their love of animals. When ever they wanted to talk to each other in private, Frank would turn into an animal so only Grover could understand him.