General Information
Homeworld Tesslos
Height about average Human
Sapience Level Sapient
Racial Abilities Electrokinesis
Behind the Scenes
Universe Ben 10 Universe

Amperi are a species of jellyfish-like beings from the planet Tesslos in the Andromeda Galaxy.



Amperi resemble blue and white jellyfish with six tentacles, four of which are their arms while the other two are their legs. Three hood-like parts make up their head and torso, with the upper most being the head and the lower two being the torso.


Amperi can manipulate and produce lightning and electricity, launching them in electrical blasts powerful enough to harm Vaxasaurians and Evolved Methanosians. They can also absorb electrical energy and relaunch attacks.

Amperi can read other beings' thoughts by sensing the electrical pulses of their minds.

Amperi can float through the air, and extend their tentacles multiple times their length.

Similar to Nosedeenians, Amperi can become pure energy in order to enter electrical cables and generate a large energy blast that surrounds them.

Amperi are amphibious, being able to survive underwater and on dry land. They can also swim at high speeds.

Amperi can become intangible, and is capable of combining that with their electrokinesis to electrically shock any objects and beings they phase through.

Due to lacking bones, Amperi can squeeze through extremely tight spaces.

Amperi can survive in the vacuum of space, as well as generate a protective energy shield around themselves.

Weaknesses Edit

If an Amperi is using electricity while only partly in water, they will shock themselves.

Since their bodies are very frail, heavy objects falling on Amperi can make them faint.

Amperi can be harmed by an Aerophibian's nueroshock blasts.

Omnitrix Transformation Edit

The Omnitrix's Amperi representative is named AmpFibian, who first appeared in the Ultimate Alien episode "Fused" after the Ultimatrix scanned Ra'ad. AmpFibian solely appears in Ultimate Alien and Omniverse.

AmpFibian has also been used by the Prime Timeline Kevin.

Gallery Edit

Notes Edit

  • According to Duncan Rouleau, the Omnitrix from the Ben 10 reboot contains Amperi DNA. Therefore, AmpFibian is one of the countless aliens whose DNA pod was glimpsed in the episode "Innervasion Part 5: High Override".
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