* Megaman Volnutt /Trigger - A teenage digger and protagonist of the Mega Man Legends franchise. During one of Barrell Caskett's digs on Nino Island, he found a large crystal embedded into the wall with a baby and a monkey inside. As Barrell investigated this further, he touched the crystal which caused it to melt and the duo to be released. Since Barrell had sneaked into the Nino ruins without permission, he took the baby and the monkey (Data) with him. The baby was later renamed Megaman Volnutt at the request of Roll since it was her favorite video game hero. It is later revealed that Megaman Volnutt is a first class purifier unit from Elysium, whose job was to eliminate malfunctioning units.
* Roll Casket - Megaman's adopted sister. Roll often aids Megaman during his dungeon adventures by making him weapons and transporting him around the city. Not much is known about Roll, but her parents were diggers who mysteriously disappeared on a dig of Forbidden Island. She is 14 years old (at the beginning of the series) and has quite a bit of skill in mechanics. She also constructs special weapons for Megaman during the games.
* Professor Barrell Caskett - Roll's grandfather, and Megaman's adopted grandfather. Barrell is a famous Digger who has wrote many books on digging. He was the one who discovered Megaman in the Nino Island ruins after sneaking into it without permission. He took care of Roll after her parents disappeared and later looks after Megaman as well.
* Data - A little robot monkey that saves the player's game, accompanies Roll somewhat as a pet, and gives Megaman helpful information if asked. It is later revealed that Data contains all of Megaman's memories, but were stored inside him so that they could not be retrieved by anyone but himself. He can talk, but only Megaman can understand him, however it appears that others can understand him by the end of Megaman Legends 2.
* Tron Bonne - Tron is the genius of the trio (The Bonne Pirates Tron, Bon and Teisel), she created the Servbots and also creates many of the Bonne's fighting machines. She also harbors a secret crush on Megaman.
