Rebootomnitrixsymbol This article belongs to the Reboot Continuity

Slapback is the Omnitrix's DNA sample of an Ekoplektoid from the planet Ekoplekton.


Slapback takes the appearance of a green humanoid frog with grey metallic eyebrows and green eyes. He wears a blue, black, and white jumpsuit covering all except for his arms and feet, as well as a grey and black mask.

Slapback wears the Omnitrix symbol on his back.

Powers and Abilities

  • Kinetic Self-Duplication
  • Size Alteration
  • Enhanced Strength

Slapback is capable of duplicating himself to an unknown degree when his back is struck. This can also be accomplished whenever Slapback applies sufficient pressure on his own back by pressing the Omnitrix symbol.

The clones are not linked in any way and can act independently from one another.

Each time he duplicates, the resulting Slapback clones become smaller and stronger by a proportionate amount.[1] It is possible for Slapback to duplicate enough to become as dense as a black hole.[DR 1]

Slapback's clones get more durable the more they multiply, with Slapback quarters being dense enough to harm Bashmouth.[2]

Slapback's clones also become denser as they multiply, being able to withstand powerful winds.[2]

Slapback is heat resistant and is immune to lava. His clones are able to float on lava.[3]

The Slapback clones can fuse back together into the original Slapback form.[1]


Slapback seems unable to control his duplicating power, as each strike on his back forces him to duplicate unwillingly.[1]

In his base form, Slapback cannot reach his own back if his arms are in a certain gesture.[4] Therefore he is required to seek help from others when trying to activate either his duplication powers[5] or his Omni-Kix form.[6]

The combined weight and mass of each set of Slapback clones may cause issues to his surroundings.[7][8] This limits how many he can reasonably make but at the same time reducing the risk of copies being harmed.

Since each of the clones have their own sense of individuality, Slapback can end up fighting himself if incensed.[1]

If Slapback times out, the Slapback clones are automatically fused back to the original Slapback.[5]

Slapback can be lifted or thrown by species with as much or more strength than a Florauna.[9]


Ben 10


Ben 10

Season 3

Season 4

Naming and Translations

Language Name Origin
German Doppelschlag From doppelt, double and Schlag, punch
Italian Sdoppione From sdoppione, splitter
Polish Pacak
Portuguese (Br) Tapinha From tapinha, pat
Romanian Dublură From Dublură, Copy
Russian Шлепок
From шлепок, slap
From the original English name
Turkish Böl-Geç From Slapback


Slapback's name is a combination of the words "slap" and "back"; this is a reference as to how his duplication powers work: by slapping his back.

A "slapback" is also a kind of doubling echo with relatively long delay between repetitions of the sound, so that the individual echoes can be perceived.


  • Slapback's name was coined by Gwen and approved by Max, Phil, and a Slapback quarter when his quarters held a vote on the name.[1]
    • Ben's proposed names for the alien were "Big Boy" and "Brawno."[1]
  • Slapback replaces Grey Matter in the active playlist.[10]
  • Slapback's frog-like design resembles Bullfrag.
  • Slapback's voice becomes higher pitched the more he duplicates.


Crew Statements

Duncan Rouleau

Introduced in Season 1 CannonboltDiamondheadFour ArmsGaxGrey MatterHeatblastOverflowStinkflyUpgradeWildvineXLR8
Introduced in Season 2 RathShock Rock
Introduced in Season 3 HumungousaurSlapback
Introduced in Season 4 JetrayWay Big
Introduced in Season 5 TBA
Omni-Enhanced Aliens CannonboltDiamondheadFour ArmsGrey MatterHeatblastOverflowStinkflyWildvineXLR8
Omni-Kix Aliens CannonboltDiamondheadFour ArmsHeatblastHumungousaurJetrayRathShock RockSlapbackXLR8
Omni-Naut Aliens HeatblastJetrayHumungousaurShock Rock
Fusion Aliens Amalgam BenGrey ArmsXLRArmBlastDiamondHeat
Non-Canon Aliens Banana AlienHotdawgMole-Stache
Non-Canon Fusion Aliens Omnitrix Glitch FusionRath ArmsShock Blast
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