Marlon is the gym leader of the Seigaiha Gym in East Isshu. Trainers that defeat him receive the Wave Badge. He was first seen in the anime on top of his Wailord as it came close to the beachline where
Ash Ketchum and
Cameron were.
Marlon speaks with a heavy accent in the Japanese version.
Gym Battle Against Cameron
Marlon told
Cameron that he'd stop him with his deep love for the sea.
Marlon instructed that the Gym battles at the Seigaiha Gym are two Pokémon apiece and whoever defeats both first wins. Initially
Cameron thought he did well in the battle and was going to have an easy victory in the match by quickly defeating
Marlon's Jellicent but
Marlon's tactic was revealed when
Marlon's Jellicent Ability Cursed Body disabled
Cameron's Ferrothorn Thunderbolt.
Marlon's Mantine tried to turn the tie of the battle to
Marlon favor but
Cameron's Samurott was able to hold its own in the water and give the match victory to
Cameron.
Marlon was actually quite impress with
Cameron as he was able to make the special field his own.