
For example, suppose in a 4-Player Competition, Player 3 reaches the goal first. If one of the players has already reached the goal, they will be unaffected by Player Swap. In 4-Player Competition, Player 1 teleports to Player 2's location, Player 2 teleports to Player 3's location, Player 3 teleports to Player 4's location and Player 4 teleports to Player 1's location. In 3-Player Competition, Player 1 teleports to Player 2's location, Player 2 teleports to Player 3's location and Player 3 teleports to Player 1's location. If more than two players are playing Competition mode in Sonic Mania Plus, Player Swap will teleport each player to the next player number's location. If the last player that has not reached the goal uses a Player Swap, the user's screen still flashes but a buzzer sound effect plays while doing nothing. However, they only appear in this mode's Zones if the players enable the "Random" feature (which produce Random power-ups throughout the mode that provide Player Swaps) or "Teleporter Only" (which replaces all monitor power-ups throughout the mode with Player Swap power-ups) in the game rules before a match. In these games, Player Swap power-ups appear first and foremost in the games' Competition mode. The Item Boxes in the games that contain this power-up are marked with a yellow-framed icon that depicts a blue and orange icon following each other around in a circle. In Sonic Mania, and its expansion Sonic Mania Plus, this power-up is referred to as " Player Swap" ( テレポーターのみ, Terepōtā nomi ?, lit. However, it can still be picked up accidentally by breaking a Random monitor. This power-up is extremely useful for the trailing players, and disadvantageous for the leading player. Player Swap will not affect players that have already reached the goal and it will have no effect if there is only one player that has not reached the goal yet. In addition, any power-ups a character might be carrying ( Shield, Bubble Shield, Lightning Shield, Fire Shield or Invincible) are transferred to the opponent. When the light fades, the playable characters in multiplayer mode switch places in the Zone they are currently in. Upon breaking the Player Swap's monitor, the screen flashes white for second. This power-up only appears in the multiplayer mode of the respective games it appears in. Hovering the mouse cursor over the icon displays the hold duration if applicable.The Player Swap's icon on the monitors containing them varies in design, though it generally features an orange and blue arrow. Icons encased in square brackets require the respective button(s) to be held down. Hovering the mouse cursor over the Command Input icons will display text that refers to the inputs set in M.U.G.E.N's Key Config. Sonic doesn't seem to have custom A.I., and doesn't make use of Sonic's comboability in its attacks, preferring to make standalone attack approaches. Sonic has 3 standard Hypers, though he can also perform 4 Hypers depending on which Shield the character has on: Shield Burst is a simple short reach knockdown attack Inferno Dash is a flaming dash multi-hit attack Bubble Blitz is an attack where Sonic bounces repeatedly on the opponent Electric Orb is a basic and quick projectile attack Sonic Spinball is an attack where Sonic repeatedly bounces on the screen Blue Tornado is an attack where Sonic spins in the air creating a damaging tornado that sucks far opponents slowly and Super Sonic, the only Hyper that doesn't use 1000 Power (it instead uses 3000 Power), is a powerful attack where Sonic flies back and forth damaging the opponent after going off-screen. Robotnik monitor that takes 50 Life from Sonic, while being unable to kill him a Extra Life monitor that recovers all of Sonic's health, though it is extremely hard to get a Normal Shield that makes Sonic capable of performing Shield Burst a Fire Shield that makes Sonic capable of performing Fire Dash and Inferno Dash a Bubble Shield that makes Sonic capable of performing Bubble Bounce and Bubble Blitz and a Lightning Shield that makes Sonic capable of performing Electric Arch and Electric Orb, as well as occasionally atracting rings, each restoring 10 Life. Sonic will randomly break one of 8 monitors, 4 of them being shields: a 10 rings monitor that restores 75 Life an Invincibility monitor that, while making Sonic invincible, also makes him unable to perform Hypers a Dr. Sonic has an unique Item Box system, where he can break a monitor at any time, assuming the character doesn't have an active shield, by pressing Ⓩ.

Sonic is fast and can outrun most characters, having a backwards run as well as air dashes to both directions, while also having all of his Specials move it forward in some way, a trait that makes up for having no projectiles with the exception of Electric Orb. Sonic is a six-button character, using Ⓐ, Ⓑ, Ⓧ and Ⓨ for his Normals, Ⓒ as a grab button, and Ⓩ to perform Item Box, as well as the only attack button in every Hyper.
