Here's my version of Armodrillo. I wasn't a big fan of the one in the show mostly because he looked more robotic than alien in the show so I decided to make my own.
For his design I put some mole features in him like his head, hands, and feet. He still has his yellow armor, but here it feels more organic. And I didn't notice until i finished coloring him that he has Cannonbolt's color scheme.
Now for his abilities, he can dig through the ground at amazing speed, his armor is very durable, since he has no eyes he uses an "echolocation" when going through the ground, like Toph from Avatar: The Last Airbender, and he has a mechanical upgrade the Omnitrix has give him, Energy Drills for when his claws just aren't enough. I added those after watching Upgrade use them in that episode where Ben gets sick and passes his illness to his aliens.