- Not to be mistaken with the character SonSon III.
- SonSon - the monkey boy hero, based on the character Sūn Wùkōng from Journey to the West.
- TonTon - (only appears in 2-player mode) - pig with a pitchfork.
The game is a 2-D sidescrolling platformer. The screen scrolls automatically, only stopping to fight major enemies. The screen features six continuous platforms that occasionally feature small gaps. SonSon and TonTon walk automatically across these platforms. Pressing up or down will cause them to jump up or down to the next platform. Pressing left causes them to move more slowly than the screen scrolls, essentially continuing to move forward, but at a reduced pace. Pressing right does the opposite - SonSon and TonTon will move across the platforms faster than the screen scrolls. The duo have only one attack - the ability to fire energy blasts from their poles.
Touching an enemy or an unfriendly projectile causes the player to lose a life. If a player has any additional lives, they will return to the screen riding on a cloud that will give them temporary invincibility. If the player presses the control stick in any direction, the cloud will disappear and the character will resume its usual walking mode. The cloud will eventually disappear on its own, even if the control stick is not used.
Power-ups come in the form of various fruits which produce points. Enough points will give the player an extra life. Gathering certain fruits will cause all enemies currently onscreen to turn into point-bearing fruits. Walking across certain platforms will randomly cause a bamboo shoot to sprout, yielding many extra points.
- SonSon III, a character created for Marvel vs. Capcom 2: New Age of Heroes, is the granddaughter of the original SonSon. She uses the staff and learns the teachings of her grandfather, though her powers in this game are more based on the book than the game.
- SonSon and TonTon, along with other characters from this title, make cameo appearances in Super Gem Fighter: Mini Mix. They randomly float across the top of the stages on clouds during fights. If a player attacks them, they will drop gems, food, or cause damage, depending upon which character is hit by the player.
- They also appear in a similar level in Super Puzzle Fighter II Turbo.
- SonSon is also included as a hidden collectible item in Zack & Wiki: Quest for Barbaros' Treasure.