Casey's Meganium is Casey's first Pokemon. It debuted in The Double Header. It is male only in TFGKE&J and Pokemon XY.
Casey first received Meganium as a Chikorita from Professor Elm. Like its trainer, it loved baseball and the Electrabuzz baseball team. Team Rocket tricked Casey by pretending they were Electrabuzz fans and attempted to steal her Chikorita and Ash's Pikachu, but they were rescued by their trainers. Later in Getting The Bugs Out, Ash and his friends encountered Casey and her Chikorita again. During a battle with Team Rocket, Chikorita evolved into Bayleef and helped rescue Ash and Pikachu. It appeared again with its trainer as a fully evolved Meganium where It met Ash and his Bayleef. It made some few appearances in Pokemon Chronicles.
Appearances in Pokemon XY Series Edit
Casey's Meganium reappeared in Pokemon XY where it was confirmed that he was male because he grew a crush on Ash's Bayleef who is a female, but Bayleef wasn't interested in him, she was only interested in Ash.
Appearances in TFGKE&J Edit
Chikorita made his debut in episode 4 of TFGKE&J Baseball for Rattata practicing baseball with his trainer Casey. He befriends Eden's Rattata who also grows fond of baseball. When Team Rocket attempts to steal Chikorita and Rattata, Eden and Casey are ready to save their Pokemon, but Rattata proves himself capable of rescuing himself and Chikorita from Team Rocket and Chikorita sends Team Rocket blasting off with a razor leaf. Casey told Eden that Rattata is capable of taking care of himself and offers to train him to play baseball. Eden decides to leave Rattata with Casey. Chikorita reappeared in Eden & Raticate where he awaited Eden's arrival. When Eden rejected Raticate, Chikorita attempts to cheer up Raticate by playing baseball with him. Chikorita is last seen saying goodbye to Raticate and Eden.