Stinkfly

Stinkfly is the Omnitrix's DNA sample of a Lepidopterran from the planet Lepidopterra.

Appearance
Stinkfly has a bug/insect body and 4 insect-like flat legs with 2 arms whose hands are human-style ones with a black coloration, similar to fingerless gloves, and 3 clawed fingers. He has 4 pedunculated eyes that are pretty small and yellowish-orange in color. These eyes are linked directly to the sides of his huge black head. His wings are very fragile with lines on them. His limbs are a brown-greenish color and his wings are light green. Stinkfly wears the Omnitrix symbol on the top of his forehead.

In Ultimate Alien, Stinkfly's Ultimatrix symbol is on his chest, his eyes are green and he no longer wears gloves.

In Omniverse, Stinkfly has bigger wings and his clothes are now green and now spread only till his forehead. He has lighter skin the Omnitrix has returned to his forehead and he also has pupils and his body and tail are bigger, while 11-year-old Stinkfly has white clothing.

Powers and Abilities
Stinkfly possesses four insectoid wings that allow quick and agile flying, and can change directions at exceptional paces.

Stinkfly can excrete high pressured streams of liquid from the pollun ducts located inside of his eye stalks and mouth. These liquids have a vast range of forms, from a flammable toxin to an immobilizing jelly.

In Don't Drink the Water, four year old Stinkfly (dubbed Stinkyfly) was able to emit a powerful herbide via flatulation, however it is unknown if the current Stinkfly has this capability.

Stinkfly has disproportional strength, able to carry heavy loads while maintaining steady flight.

Stinkfly's tail is extremely sharp and can slice through steel with little effort.

Weaknesses
Stinkfly is extremely weak to any kind of chemical poison or gas.

Although his exoskeleton body is fairly strong, Stinkfly's wings are very fragile. Water is especially a problem for Stinkfly, as it can render him incapable of flight if too much gets on his wings. Furthermore, he is unable to swim due to the small surface area of his limbs.

A more minor inconvenience is Stinkfly's odor, so hiding from anything or anyone that can smell can be a problem.

Stinkfly's goo can be neutralized by Buglizard's fog.

Original Series

 * Stinkfly first appeared in Washington B.C.:
 * Stinkfly saved Gwen from a mutant bird and defeated Dr. Animo.
 * In The Krakken:
 * Stinkfly battled Jonah Melville.
 * In Tourist Trap:
 * Stinkfly scared a kid in a car and saved a man from a fire.
 * In Kevin 11:
 * Stinkfly escaped the police with Kevin.
 * In Secrets:
 * Stinkfly was captured by Vilgax.
 * In The Big Tick:
 * Stinkfly escaped The Great One's followers.
 * In Framed:
 * Kevin used Stinkfly four times.
 * In Camp Fear:
 * Stinkfly flew over Camp Opinicon while Gwen dropped athlete's foot powder on it.
 * In Ultimate Weapon:
 * Stinkfly flew Gwen and Max to a temple.
 * In Tough Luck:
 * Stinkfly attempted to rescue a man hanging from a helicopter, but was later rescued by Gwen as Lucky Girl.
 * In They Lurk Below:
 * Stinkfly saved Gwen and Edwin from crashing into water.
 * In Back With a Vengeance:
 * Stinkfly appeared six times.
 * In Ben 10,000:
 * Stinkfly was trapped by an alternate timeline Four Arms.
 * In A Change of Face:
 * Stinkfly stopped a fire caused by Charmcaster and was caught in her spell, before being hit out by Gwen.
 * In Merry Christmas:
 * Stinkfly acted as a reindeer to pull Santa's sleigh.
 * In Super Alien Hero Buddy Adventures:
 * Stinkfly mocked Firey Buddy, Doggy Buddy and Handy Buddy.
 * In The Return:
 * Stinkfly caught some escaped prisoners.
 * In Don't Drink the Water:
 * Four year old Stinkfly, Stinkyfly, defeated Hex's mutated plants.
 * In Ben 10 vs. the Negative 10: Part 1:
 * Stinkfly caught some criminals.
 * In Ben 10: Secret of The Omnitrix:
 * Stinkfly appeared when the Omnitrix malfunctioned.
 * In Speeded Out:
 * Stinkfly was used to get a girl's kitten down from a tree.

Ultimate Alien

 * Stinkfly returned to Ultimate Alien in The Forge of Creation:
 * Ten year old Stinkfly was defeated by Ultimate Aggregor.
 * In Ben 10,000 Returns:
 * Stinkfly was re-unlocked by Ben 10,000.

By 11 year old Ben

 * In A Jolt from the Past:
 * Stinkfly battled a Megawhatt.
 * In Of Predators and Prey: Part 2:
 * Stinkfly teased Gwen and battled Terroranchula.

By 16 year old Ben

 * In Of Predators and Prey: Part 1:
 * Stinkfly battled Buglizard.
 * In Of Predators and Prey: Part 2:
 * Stinkfly escaped from Slamworm.
 * In Malefactor:
 * Stinkfly was dunked in the Ben 10: Dunk Tank.

Appearances
{{Scroll box
 * content====Ben 10===
 * Washington B.C. (first appearance)
 * The Krakken
 * Tourist Trap
 * Kevin 11
 * Secrets
 * The Big Tick
 * Framed (used by Kevin 4x)
 * Camp Fear
 * Ultimate Weapon
 * Tough Luck
 * They Lurk Below
 * Back With a Vengeance (6x)
 * Ben 10,000 (accidental transformation; selected alien was Four Arms) (alternate timeline)
 * A Change of Face
 * Merry Christmas
 * Super Alien Hero Buddy Adventures
 * The Return
 * Don't Drink the Water (as Stinkyfly)
 * Ben 10 vs. the Negative 10 (Part 1)
 * Ben 10: Secret of The Omnitrix
 * Ben 10: Destroy All Aliens

Ben 10 Shorts

 * Speeded Out (accidental transformation; selected alien was XLR8)

Ben 10: Ultimate Alien

 * The Forge of Creation (first re-appearance, used by 10-year-old Ben)

11 year old Ben

 * A Jolt from the Past (first re-appearance)
 * Of Predators And Prey: Part 2

16 year old Ben

 * Of Predators And Prey: Part 1 (accidental transformation; intended alien was Humungousaur)
 * Of Predators And Prey: Part 2 (accidental transformation; intendeded alien was Humungousaur)
 * Malefactor (cameo)}}

Ben 10,000 Alternate Timeline
In an alternate timeline's future, Stinkfly's body style is the same as in the original series, except his eyes have pupils. Along with them, his stinger and legs, are bigger. Also, his clothes are inverted like Ben 10,000's.

Ben 10

 * 4" Stinkfly
 * Stinkfly (Battle Version)
 * Stinkfly (DNA Alien)

Ben 10: Alien Force

 * Alien Creation Figures Stinkfly and Upgrade

Ben 10: Ultimate Alien

 * Alter Aliens Ben to Stinkfly and Wildvine to Heatblast
 * Haywire Figures Stinkfly [Four Arms]

Ben 10: Omniverse

 * 11 year old Stinkfly 2 Inch Mini Figure
 * 11 year old Stinkfly Hyper Alien
 * 4 inch figure

Trivia

 * During his transformation sequences, Stinkfly's eyes pop out through the sides of Ben's head even though Ben still has his own human eyes as well, although closed.
 * In Washington B.C., Stinkfly was called "Butterfly" by Gwen.
 * Stinkfly was the first alien Ben named on screen.
 * The Lepidopterran Prisoner looks similar to Stinkfly in Ben 10,000.
 * According to Cartoon Network UK, Stinkfly's slime feels like a mix of rubber, cement and warm oatmeal.
 * Stinkfly was Ben's choice of transportation until Jetray and Big Chill replaced him, who was then replaced by Astrodactyl.