Randall is a child that goes to the kindergarten in the Kalos near Shoyo City where
Penelope is a teacher at. His name in the Japanese version is based of the French word for Monday (lundi).
He was afraid that the Pokémon that
Penelope would bring to the school would hurt him, so he decided to avoid them. He had an encounter with some Pokémon that frightened him. It wasn't until he became friends with
Ash's Froakie that he was no longer afraid of Pokémon. He helped rescue
Ash's Pikachu and
Penelope's Sylveon after they were stolen by Rocket Gang.