When the special move button is pressed, Wario leans forward and opens his mouth, then bites. The bite itself is non-damaging, except against enemies in the Subspace Emissary; instead, Wario's open mouth acts as a grab, trapping the first opponent that comes in range. Wario can also keep his mouth open for longer by holding the special button, extending the grab's duration. When an opponent is caught, he can bite them repeatedly by pressing the attack or special move buttons, dealing a small amount of damage each time, then spits them forward. The higher the opponent's damage, the more times Wario can bite them before they are spat. Additionally, Wario's head is briefly granted intangibility when he opens his mouth, allowing him to capture an opponent more safely without getting hit by an attack inbetween.
Chomp also has item-swallowing capabilities, allowing Wario to eat items or projectiles in range, with up to four at a time. Eating a heavy item, such as a Crate, takes longer to swallow and leaves Wario more vulnerable. In Super Smash Bros. Brawl, eating standard items has no effect other than removing them from play. In Super Smash Bros. 4 and Super Smash Bros. Ultimate, however, each item eaten heals Wario by 1%, and adds 90 frames (1.5 seconds) of charge to his Wario Waft. This improves the move's utility against characters that can use items (such as Peach's Vegetable), and also allows Wario himself to obtain these benefits by eating his own Wario Bike. Using Chomp on other types of items has different effects:
In Ultimate, Chomp was further improved. Each bite on a caught opponent heals Wario by 0.6%, and the spit deals considerably more knockback, allowing it to KO reliably near edges at high percentages. Additionally, in battles with more than two players, each bite deals slightly more damage; from three to eight players total, the bite's base damage of 2% is multiplied by 1.2×, 1.3×, 1.4×, 1.5×, 1.6×, and 1.7×, respectively, for a maximum of 3.4% damage per bite with eight players. However, the move has also been slightly nerfed, as it no longer grants intangibility on Wario's head when initiated, making it less safe for capturing opponents in the middle of an attack, and instead encouraging its use against defensive options such as shields or spot dodges.
When Chomp is used on an opponent, the amount of time they are caught before Wario spits them is equal to
After an opponent is released from Chomp, Wario cannot use the move again for a short period of time, which lasts 15 frames in Brawl, and 50 frames in Smash 4 and Ultimate.
Special Move customization was added in Super Smash Bros. 4. These are the variations:
Besides Wario's love of eating in general, the move is very loosely inspired by the microgame Hot Dog Hog from WarioWare, Inc.: Mega Microgame$! where Wario has to finish chomping on a long hotdog to win the game, or Eating Contest from WarioWare: Twisted!, where a player must finish the minigame by eating a watermelon, a banana, or a doughnut.
Garlic Breath is inspired by Wario's love of garlic.
Names in other languages