Popora

Popora is a fictional creature from Unlimited Adventure. Popora is a wolf/rabbit mixed hybrid and lives on an unnamed, mysterious island. At first, he is believed to be the antagonist of the game, but he becomes an ally half way through.

Beach Zone
When Luffy crashes down into the island, Popora is the first one to spot him. Luffy almost sees the creature, but Popora runs behind some nearby bushes before being sighted. Luffy believes he was just imagining things. After exploring the plains, Luffy's orb starts to glow and makes a noise. A new area is unlocked. Distracted by the new discovery, Popora uses this chance and rushes down from a hill above, bashing Luffys head with a hammer. A brief flashback is shown of both Popora and Luffy's past. Popora then runs off before Luffy can counterattack.

After Luffy reunites with all 7 of her crew members the crew search the island, for world's happiness and the Thousand Sunny. They stumble upon an ancient orb. Popora runs toward them, realizing they're about to release it. He screams getting Zoro's attention. They both make eye contact, and more of Popora's backstory is shown. However, Popora is too late, and the orb transforms into Mihawk. The Straw Hats fight him, eventually winning and breaking one of the six seals. Failing to stop them, Popora runs off to protect the last 10 remaining orbs.

Jungle Zone
The crew descend into the Jungle Zone. Popora reaches them and leaps from the trees. He jumps past Luffy and headbutts toward Chopper. More of each other's past is shown and Popora runs away. Nami asks Chopper if he's okay from the attack he just recieved. Chopper just stands there, wondering if the creature is be like him. Later, everyone finds another ancient orb. Popora jumps out of nowhere, ready to protect it with his life. Nami asks Chopper to talk to Popora and explain what they're trying to do. However, Chopper doesn't understand its language. Irritated, Sanji tells Nami that they don't need to be nice to Popora and tries to attack him. Flashbacks of Popora and Sanji's past are shown and the orb turns into Krieg. Popora runs off while the Straw Hats defeat him.