Dragon

Dragon is an unnamed Dragon-like alien mapmaker that came to Earth and was captured by the Forever Knights about 1,000 years ago for unknown reasons, and since then they have been testing weapons trying to slay it.

Backstory
In the episode Be-Knighted, it eventually escaped and confronted Ben and company but his Universal Translator was broken and he fled when Connortried to shoot it with an alien weapon. Later Ben tracked the dragon down and fought him as Spidermonkey, he eventually replaced the Universal Translator with a new one, and it is revealed that the dragon was trapped and that he is an alien that came to Earth to make an interstellar map. The dragon wanted to kill the Forever Knights as revenge from trapping him for a thousand years, but Ben succeeded in convincing it otherwise and fled in his ship.

Powers and Abilities
The dragon can breathe laser blasts from its mouth. With its wings, the dragon can fly as fast as an airplane. It also has great strength and resistance to damage.

Alien Force

 * Be-Knighted

Ultimate Alien

 * The Ultimate Enemy: Part 2 (flashback only)