Tank

Tank is Ranger's right-hand man. He is pure muscle, and starting in Twelve Sharp, he starts going out with Lula. By Fearless Fourteen, Lula and Tank are engaged after she tricks him. The engagement is called off in Plum Spooky.

In Lean Mean Thirteen, while Tank is in the hospital after being shot, we learn that his real first name is Pierre. Although, according to Ranger, "Tank isn't overly fond of being named Pierre."