Uploaded March 2021 | Updated September 2026, 2 hours ago

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For further details on current fighters' stats and hitboxes, check out Ultimate Frame Data: ultimateframedata.com/stats.php
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Welcome to another episode of Challenger Approaching! In this series, we discuss characters who could find their way into Super Smash Bros. Ultimate or future entries, then go into ludicrous detail on what they would be like if they joined the fight for real!

This episode, we turn to someone who actually became a realistic option after recent events. Additional Sonic characters find themselves brought up in Smash speculation sometimes, but never seriously since we hadn't yet seen two guest fighters from the same series (other than echo fighters). With Sephiroth breaking that barrier, though, the path is wide open for third party franchises to double up if the stars align! A fact that was not lost on the Smash or Sonic fandoms, as many of them started wondering if the blue blur's archnemesis could be next.

But beyond the hype and discussion, are the stars actually aligning for Dr. Eggman to join the fight? More importantly, if he did get in, how could his nearly 20 years of boss battles and other source material be used to create his moveset? Let's take a look.
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Graphic design by Voyager: twitter.com/Fire_Voyager
Post-production assistance by Yoshiller: twitter.com/RealYoshiller
Challenger Key Art by Ed Mendoza: twitter.com/edmendozaart

Additional Sources:
Shadow the Hedgehog – All Bosses + Cutscenes (ProsafiaGaming): youtube.com/watch?v=J6Yc1uFd7sg
Sonic Advance – All Bosses (NintenU): youtube.com/watch?v=pCg-r9B9MVM
Sonic Adventure DX – All Bosses (NintenU): youtube.com/watch?v=y-9mG0XrBCU
Sonic Adventure 2 – All Cutscenes (Sonic Overtime): youtube.com/watch?v=-tvt83X_8QU
Sonic CD – All Bosses (NintenU): youtube.com/watch?v=T-fzAM6P5Qw
Sonic Colors – All Cutscenes (Gamer’s Little Playground): youtube.com/watch?v=XzmZQokUj5w
Sonic Colors – Gameplay (FCPlaythroughs): youtube.com/watch?v=WbRC1pNll-w
Sonic Forces – All Cutscenes (ProsafiaGaming): youtube.com/watch?v=qrs8UozGEDo
Sonic Mania – All Bosses (ProsafiaGaming): youtube.com/watch?v=VDjMQWKxIB4
Sonic the Hedgehog – All Bosses (NintenU): youtube.com/watch?v=eM5JO1AtJdw
Sonic the Hedgehog 2 – All Bosses (NintenU): youtube.com/watch?v=WJHZFcAAUiE
Sonic the Hedgehog 2 – All Bosses (That Fella Johnny): youtube.com/watch?v=PY9ccWsi2XA
Sonic the Hedgehog 3 – All Bosses (NintenU): youtube.com/watch?v=q8iA7DpW3i8
Sonic Unleashed (Wii) – All Bosses + Cutscenes (ProsafiaGaming): youtube.com/watch?v=2TTZ2ecaexU
Super Smash Bros. Ultimate – First Trailer (Nintendo): youtube.com/watch?v=w3Gt42kVgCw
Super Smash Bros. Ultimate – Pyra & Mythra Reveal Trailer (Nintendo): youtube.com/watch?v=sdgdxaIkU5g
Super Smash Bros. Ultimate – Sephiroth Reveal Trailer (Nintendo): youtube.com/watch?v=cJDxiChHKtE
Super Smash Bros. Ultimate – Steve Reveal Trailer (Nintendo): youtube.com/watch?v=90Jve_qWnpc

Shadow Splash Art (Aegis): youtube.com/watch?v=vy25ft5qY10
Tails Splash Art (Nintenworld-art): deviantart.com/nintenworld-art/art/Tails-Soars-into-Battle-555698768