Master Chief

Master Chief (Real Name John -117) is a SPARTAN-II commando of the UNSC Naval Special Warfare Command. He became one of the most important heroes of the UNSC during the Human-Covenant War. With nearly 30 years of active duty, he is one of the most decorated war veterans in the United Nations Space Command and has earned every know medaln in the UNSC except the Prisoner of War Medallion.

He was once Samus Aran's Boyfriend but they broke because their got in the way of their work in the past. They got back together though.

Best Friends: Cortana, The Arbiter, Samus, Bender, Skipper and Heloise

Worst Enemies: The Gravemind and Prophet of Truth

Totally Mobian Spies
When he learned of 343 Gulity's Spark return he was told by his supreior to find the highly known B Team and join up with the team. He followed former children of Megatron member Profion to their ship and met them and after some talk he was alllowed entry into the Team. He also has brought Cortana with him she can give information to Bender and his friends about area's control by the Iron Queen and the best way to take those area's.

Master Chief introduces his friends and allies to Cortana who seems to know where the cew has to go to find the 3rd pure Heart and alongside some of the team he goes to find out what she was talking about. Apparently it's revealed that despite him being new to the team, Bender wants MC to mercy kill him when he makes himself mortal and gives up hope or if anything happens to make his life go unrepairingly wrong. The reason why he wants it to be the Chief is because if anyone can make sure Bender's life ends it's the Multi Universe's greatest Super Soldier.

Master Chief joins the team in their racing plans although he knows nothing of kart racing. Master Chief then helps the others delay Red Skull and their men with Lizbeth`s help as they also watch Big Boss deal with Red Skull and then gives Cortana to Lizbeth to help her land the ship. He with the others drop the nukes by disabling them on Lizbeth`s authority. Master Chief then helps Bender and co with what Bender calls "mulii layered plans." something his group does. Master Chief like the others learns about the Krabby Patties and wonders why Brain hits Pinky all the time. Out of Nowhere Master Chief saves the girls from Mecha Sally and then makes sure Lizbeth stops Sally as he tells her that Big Boss would be proud if she did. Master Chief finds the last heart in Sally and deducts the obvious.

Master Chief knows exactly who he wants to deal with. Master Chief then kills 343 Gulity Spark and manages to make it to Big Boss after Big Boss and the Alpha Team defeats the Patriots. Master Chief then does more good by alerting Asami of her father's escape and then saving Obi Wan and Askoa by dueling Count Dooku and winning. After Totally Mobian Spies Master Chief met his old girl friend Samus Aran and they decide to try again and they will make sure their love won't get in the way of their work..

Before leaving back for home Bender made Master Chief the Master in charge of the team in his and the other M.O.D.A.B's members absent.

The Multiuniversal War of Destiny
Master Chief returns to assist his friends against their old enemy Discord and their new enemy Sigma. He will also reunite and team up with The Aribter and face his own enemy in The Gravemind. Master Chief communicates with Bender about Discord. He knows about him since he helped Bender with his attack. Master Chief returns with the Aritber and has placed in their team. Master Chief while meeting Carmelita Fox he is unsure of trusting 343 Gulity Spark, but realizes he may need all the help he can get. Master Chief then like the others joins in on layng comments on Discord only to be shocked when Discord reveals MC's real name. He also helps in acquiring the first ring. He then attacks Madarin with Jack Sparrow and Jake Miller to save his pals. Master Chief after that alongside The Arbiter keeps an eye on the Nerd. Master Chief then contacts Celestia with his friends about what happened. Master Chief helps his friends find the girls and went Celestia apporaches him, he is the first to question what will transpire with the other 3 groups.

The Rise of Mechuckles: Beware the Sith Stalker
He was seen often with Samus and The Arbiter doing what's what before meeting back up with the heroes  ready to fight against the villains

Allies: Docter Catherine Halsey, Cortana, The Arbiter, The Eiltes, Captain Keys, Sargeant Johnson, Miranda Keys, Lord Hood, 343 Gulity Spark, (On Off) Samus Aran, All members of The B Team espically Bender and Skipper, Hellboy, Zuko, Cammy White, Jack Sparrow, Obi Wan, Sally Acorn, Jake Miller, Applebloom, Sweetie Pie, Scolattoo, Protoman, X5, Sparkley, Noah Parker, Hugo Brass, Professor Calamitous, All the Members of The Alpha Team, Ice King, Jimmy Neutron, Twilight Sparkle, Pinkie Pie, Rarity, Spike, Applejack, Rainbow Dash, Fluttershy, Aang, Katara, Asami Sato, Hiccup, Astrid, Picard, Riker, Worf, Q, Spyro, Cynder, Sparx Danny Phantom, Dipper Pines, Mabel Pines, El Tigre, Frida, Flame Princess, Princess Bubblegum, Falco Lombardi, Phineas, Ferb, Isabella, House, Gru, Jake Miller, Jill Valentine, Mandark, Princess Morbucks, Professor Pericles, Asoka Tano, Profion, Mushu, Betty, Protoman, Sherry Birkin, Sari Sumdac, Stan Smith, Snake, Solidus, Tak, Megaman, Roll, Phantom R, Wizardmon, Fox Xanatos, Balthzar Blake,Angry Video Game Nerd,  Alie, Axl, Giro, Jack Frost

Enemies: The Covenant, The Flood, Gravemind, The Diact, The Iron Queen and her allies, Discord, The Dystopia League, Sigma, The Sigma Organzation