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I am not a student actually. I just wanted to meet you. Mark the Tapir, hi. I'm your biggest fan."
~ Mark the Tapir, "The Biggest Fan"

Mark the Tapir is a character who appears in the Sonic Boom television series. He is an anthropomorphic tapir who resides on Seaside Island and the fanatical, self-proclaimed “number-one fan" of Sonic the Hedgehog.


Coming to Career Day to meet Sonic, Mark introduced himself to him before he left. He then started to stalk Sonic, trying intensely to please him. Eventually, Mark convinced Sonic to let him become his personal assistant. While Mark gave Sonic excellent services, he purposely crashed Sonic into a boulder when he had to go to the movies with his crew. Mark then trapped Sonic in a body cast in his cabin so they could spent all their time together acting out Mark's fanatic dreams. Though Mark trapped Sonic's team in body casts too when they came looking for him, the heroes broke while trying to escape and defeated Mark, who was only happy to be beaten by his hero.


Mark is a fanatical, zealous, disturbed, hyperactive, and mentally unstable psychopath obsessed with Sonic. On the surface, he appears as an overly eager and friendly guy who tries his best to do good deeds, albeit with extreme intensity. He is also a supreme and influential fanboy, geeking out over doing the most mundane things with Sonic and seeking to spent as much time with him as possible. When Mark thinks he has failed to live up to his idol's expectations or chances to satisfy his fanboy dreams, he is prone to bouts of mood swings and/or minor self-punishment. He loves Sonic so much that he even writes fanfition of him and gets angry when Sonic gives his attentions to his friends.

Mark is also not one to sit still (especially when Sonic is around), as he always has something going on, and is very observant about details. Outside Sonic and those he deems his friends, Mark behaves rather antisocially towards others. Mark is also very cunning, deceitful, manipulative, and devious, as exemplified in how he lured Sonic into a false sense of security despite his intensity and getting Sonic to make him his assistant for his own agenda.

He also shows pronounced sinister tendencies, not only hurting his idol Sonic to keep him to himself, but also keeping people against their will so they can be his friends. However, despite his inexcusable and argumentative behavior, Mark always acts extremely innocent, showing a complete lack of conscience and empathy.


  • “Oooooh… SonAmy…. Spicy……”
  • “Let’s go over my Sonic fan fiction. Okay let’s go over something family-friendly heehee. Oh not that one. Oh definitely not that one.”
  • “No pickles on my burger! I HATE PICKLES!”


  • Mark's role in "The Biggest Fan" mirrors that of Annie Wilkes in Steven King's novel, Misery.
  • Mark does not really care about "SonAmy" (a fanterm for Sonic and Amy being in a romantic relationship).
  • The icon of Sonic's head on Mark's shirt first appeared in Sonic Boom CG Style Guide.
  • Mark's attire mimics Sonic's appearance; his shirt is blue like Sonic's torso, his gloves are almost the same as Sonic's, and his shoes' parts have roughly the same colors as those Sonic wears.
  • Though it has been denied by the writers, Mark is possibly a parody of Chris Chan. He is an obsessed fan, he dressed Sonic up to look like Sonichu, he proclaims that he hates orange soda, and he complained about Sonic's arms.



            Sonic the Hedgehog logo.png Villains

Eggman Empire
Dr. Ivo "Eggman" Robotnik | Metal Sonic | Orbot (prototype) | Cubot | EggRobos | Lone EggRobo | Mecha Sonic | Silver Sonic | Mecha Knuckles | Badniks (Egg Pawns) | Tails Doll | Heavy King | Hard-Boiled Heavies | E-100 Alpha | E-101 Beta | Eggman Enterprises | MeteorTech | SCR-HD | Time Eater | Jackal Squad (Infinite) | Replicas Accevive Corp | Robotnik Corp | Hey Ho

Team Dark
Shadow the Hedgehog | Rouge the Bat | E-123 Omega

Babylon Rogues
Jet the Hawk | Wave the Swallow | Storm the Albatross

Eggman Nega's Forces
Eggman Nega | Metal Sonic 3.0

Deadly Six
Zavok | Zazz | Zeena | Master Zik | Zomom | Zor

Black Arms
Black Doom | Eclipse the Darkling

Mephiles the Dark | Iblis (Iblis's Minions)

Nocturnus Clan
Imperator Ix

Battle Kukku Empire
Great Battle Kukku | Battle Kukku XVI | Dr. Fukurokov

Bearenger the Bear | Fockewulf the Wolf | Carrotia the Rabbit | Witchcart

Dr. Eggman | Hard-Boiled Heavies (Heavy King, Heavy Gunner, Heavy Shinobi, Heavy Magician, Heavy Rider) | Metal Sonic

Sonic Boom
Charlie | D-Fekt | Dave the Intern | Dr. Eggman | Lyric the Last Ancient | Mark the Tapir | Metal Sonic | Morpho | Nominatus | Shadow the Hedgehog | Swifty the Shrew

Dr. Robotnik | Agent Stone | Echidna Tribe (Pachacamac) | Scavengers | Lindsey and Jason | Unit

Babylon Guardian | Biolizard | King Arthur | Boom Boos | Dr. Ivo Robotnik (USA) | Scorpius | Captain Whisker | Chaos | Dark Gaia (Dark Gaia's Minions) | Erazor Djinn | Fang the Sniper | Feist | G-merl | King Boom Boo | Ifrit | Merlina | Professor Gerald Robotnik | Pachacamac

See Also
Sonic Cartoon Villains | Sonic Comic Villains | Sonic Manga Villains | Sonic X Villains