Ben 10 Fan Fiction Wiki
Ben 10 Fan Fiction Wiki
General Information
Species Unknown
Home World Unknown
DNA source Unknown
Body Humanoid Dinosaur Bird
Powers and Abilities
Abilities Flight
Gas Production
Enhanced Reflexes
Enhanced Speed
Equipment Brace (TOS)
First Appearance Brawl

Gasadactyl is an alien transformation from the show, Brandon 10.


In The Original Series, Gasadactyl resembles a light-brown petrodactyl with a long, yellow beak and yellow flaps inbetween his arms and legs. The Omnitrix symbol is mounted onto a black brace located inbetween his neck and shoulder.

In Ultimate Hero, Gasadactyl looks simiar to his appearance in The Original Series however his arms are thinner while his muscles have gotten slightly buffer. His elbow bones are now sticking out and the yellow flaps inbetween his arms and legs have grown more as it extends inbetween his legs; it also contains more wrinkles. There is now a jaggered, black line forming from his back to his chest. His eyes are more narrow and his head is more pointier. The Ultimatrix is on his chest.

Powers and Abilities

Gasadactyl can fly at tremendous heights and has enhanced speed when flying. He also can hang from high places using his feet. Gasadactyl has the ability to produce gas from his beak which can stun enemies with its foul smell. He can also change the gas from a neutral yet bad oder to a poisionous and acidic one. Gasadactyl is also strong enough to carry two passengers and attack with his hands.


Gasadactyl's gas can be ignited into flames which can cause physical harm to him if he gets too close. Gasadactyl also can't fly if his wings are trapped, injured or dislocated. Gasadactyl also smells awfully which can be an offset to neutrals and allies.


Original Series


Ultimate Hero

Video Games

Online Games




  • He is the second dinosaur-like alien in Brandon 10; the first being Ro-Warasaur.
  • Gasadactyl's name is based off of Gas and Pterodactyl.
  • Gasadactyl is the second alien to reappear since The Original Series in Ultimate Hero, the first being Ro-Warasaur.
    • However, Gasadactyl is the fourth alien to reappear since TOS (not counting the Wildpup TV Cameo in A Hero is Known) in Brandon 10; the first being Rocks, the second being Snow Bear and the third being Ro-Warasaur.


Brandon 10
Main Characters in The Original Series
Brandon 10 | Coco
Supporting Characters in The Original Series
Kayla | Sophia
Villains in The Original Series
The Conqueror | The Creator | The Mutater | The Sorceress
Aliens in The Original Series
Freezefire | Ro-Warasaur | Wildpup | Big Boo | Slime Shot | Gasadactyl | Angler Fish | Snow Bear | Virus | Aqualad
Additional Aliens in The Original Series
Twisty | Beastie | Rocks