- “...Their son, Marcus, grows into a fine young pup, and the Fox family enjoys a happy life together. Marcus enters the Cornerian Academy and follows his father's path. The apple does not fall far from the tree, as Marcus is gifted with unbelievable flying skill. Marcus soon forms an elite squadron to defend peace wherever it is threatened. He teams up with Slippy's son and Peppy's granddaughter, and tracks down the legendary pilot Falco Lombardi. And with that, a new Star Fox is born!”
- —Good-bye, Fox
Marcus is the son of Fox McCloud and Krystal, who has only ever been seen or mentioned in the "Star Fox Command" ending "Good-bye, Fox" in which the two retire and settle down.
Right from the beginning, Marcus clearly inherited an equal combination of traits from both his parents Fox and Krystal, such as her blue fur, and his desire to be a great star pilot. His forehead fringe is shaped somewhat like a fox tail. In his childhood, Marcus wore a yellow jumpsuit, and when starting his own Star Fox team, a uniform identical to the original Star Fox team, albeit an orange flight suit as his specific basecolor, with a greyish-white coat and grey boots.
Following the defeat of the Anglars, Fox and the rest of the Star Fox Team vote to disband the squadron following, with Fox, immediately upon destroying the Anglars, departing the Great Fox forever and meeting Krystal again on Sauria, keeping his promise to rebuild the relationship he ended due to Fox forcing Krystal to leave the team due to his fears for her safety from his line of work. Once Fox reunited with Krystal, seeing that he has finished his old life with Star Fox to be with her for good, she joyfully forgives him and they soon settle down to a quiet life. The rest of the Star Fox team went their own ways as well.
At some point, Fox and Krystal had Marcus. In terms of appearance, Marcus physically appears much like his father, and inherits his strong sense of leadership, though inherits his mother's blue fur. Marcus was raised by his parents, becoming a "fine young pup", and they enjoy a happy life together.
When he was old enough, Marcus enrolled in the Cornerian Academy, intending to follow in his father's footsteps. Marcus soon proved that the apple doesn't fall far from the tree during his training. His flying skill, a gift passed down through his family, was considered "unbelievable".
The New Star Fox
Upon graduation, Marcus, continuing to follow his parents, and (supposedly) late grandfather's example and footsteps, went into freelance work, intending to re-form the elite Star Fox squadron. Marcus soon succeeded, teaming up with Slippy's son, Peppy's granddaughter, and even managed to track down the legendary pilot Falco Lombardi. Together, the new Star Fox team defends peace wherever it is threatened.
- While he would likely have gone by the surname McCloud, it was not specified as such.
- All of Marcus' grandparents may have been killed by Andross during the course of the series. His paternal grandmother (if considered canonical) was accidentally murdered with a carbomb, his paternal grandfather is presumed dead, and both of his maternal grandparents died during the destruction of his mother's home planet Cerinia, which are believed to have been caused by Andross.
- In the 1993 Star Fox comic, Fox's mother was identified as the late Vixy Reinard. If she was a game-relevant character, then she could be considered the paternal grandmother of Marcus; however, as it was an adaptation of the original SNES game, this expanded family history is not normally considered canonical.
|Others||Tricky • Free-As-A-Bird • Marcus • Slippy's son • Peppy's granddaughter • Fara Phoenix|
|Vehicles||Arwing • Landmaster • Blue-Marine • Great Fox • Walker • Gyrowing • Roadmaster|
|Other Vehicles||Arwing II • Sky Claw • Bullfrog • Cloud Runner • Sky Bunny • Tadpole • Catspaw • Cat's Paw 2 • Monkey Arrow • Cornerian Fighter • Great Fox 2006 • Armoured Arwing • Light Arwing • Mothership|
|Supporting Characters||Vivian Hare • General Pepper • Marcus • Slippy's son • Peppy's granddaughter|
|Bosses||ZaZanga 9 • Splitter • Devil Shark • Octopod • Biobrain • Star Wolf (Wolf, Panther and Leon) • Death Crab • Pigma Dengar • Solar Satellite • Killer Bee • Dune Worm • Monarch Dodora • Grunner • Arrow Head • Anglar Emperor|
|Enemies||Anglar Starfish • Elite Fighter • Anglar Missile • Anglar Mothership|
|Locations||Corneria • Aquas • Asteroid Belt • Fichina • Katina • Sector X • Sector Y • Sector Z • Solar • Titania • Venom|
|Navigation||Plot • Missions • Gallery • Videos • Script|