Marven is a Columbian Mammoth. He was BOB's first creature.
History
His card, along with the Move Cards Thunder Bazooka, Lightning Ax, and Blitz Counter, winded up on the side of an interstate. A bolt of lightning hit the cards, activating him. He rampaged on the interstate, which hit the news. When Team Monster arrived, he threw a car at them, but Susan caught it and threw it back. He battled Thylaco, and lost. He was later revealed to be a 2 on the Power Scale. The next episode, he battled an Edmontosaurus alongside 3 Oviraptor, 3 Tupuxuara, 3 Minmi, 3 Muraenosaurus, and a Supersaurus and lost. Two episodes later, he battled a Didelphodon and lost. The next episode, he battled a Dimetrodon and lost. The next episode, he battled an Entelodon and a Cryolophosaurus and lost. The next episode, he battled an Euparkeria and lost. The next episode, he battled a Pachycephalosaurus and lost. The next episode, he battled a Ceramornis and lost. The next episode, he battled a Cimolestes and lost. The next episode, he battled a Purgatorius and lost. The next episode, he battled Wide and lost. The next episode, he battled in a battle royale. He defeated Merman, but lost in the end. Two episodes later, he battled in another battle royale, but was defeated. The next episode, he battled a Hippopotamus Gorgops, and lost. The next episode, he battled a Pristichampsus, and scored his first victory. The next episode, he battled a Camouflage Beast and lost. Two episodes later, he battled a Giganotosaurus and lost. The next episode, he battled in a battle royale, but was defeated. The next episode, he battled a Future Fungus, but lost. The next episode, he battled a Sauroposeidon and won easily. The next episode, he battled a Eustreptospondylus and lost. The next episode, he battled a Postosuchus but lost. The next episode, he battled a Deinosuchus and won easily. The next episode, he battled a Triceratops and lost. He was removed from the team by Chomp's capture.
Move Cards
The first copy of the Thunder Bazooka Move Card was in his Card Capsule, and was activated along with him.
The first copy of the Lightning Ax Move Card was in his Card Capsule, and was activated along with him.
The first copy of the Blitz Counter Move Card was in his Card Capsule, and was activated along with him.
Blitz Spin Attack
He combines Blitz Counter with Blazing Spin Attack.
Trivia
He is named after famous zoologist and adventurer Nigel Marven.
He is the first Lightning creature to appear.
He has won 12.5% of his battles.