Insectoid (Ben 10)

Insectoids are a sapient race of yellow four-legged insects from an unknown planet.

Culture
Because the Atrocians are unable to clean up after themselves, the Insectoids evolved as a natural sanitation solution to the Atrocian garbage problem. Once a week, Insectoids roll through Atrocian villages, sticky-balling up all the filth before blowing them up. Since developing faster than light space travel, Insectoids have started highly successful sanitation services on other planets.

Abilities
Insectoids can spit sticky green plasma that they use to absorb matter with. The more matter is absorbed, the bigger the ball becomes. Upon impact, the ball will violently explode, with the explosion radius dependent on the size of the plasma ball.

Insectoids are capable of scaling vertical surfaces and can fit into tight spaces as a result of their small size.

Insectoids are incredibly agile, capable of dodging sniper fire with grace and ease.

Weaknesses
The plasma balls are very sticky and Insectoids can become stuck in them or subjected to their explosions if the balls are reflected back at them.

In addition, Insectoids are weak to their natural predators, the Terroranchulas, who can trap Insectoids with their energy webs and neutralize their plasma balls.

Omnitrix Transformation
The Omnitrix's Insectoid representative is named Ball Weevil, who first appeared in the Omniverse episode "Of Predators and Prey: Part 1". Ball Weevil solely appears in Omniverse.