Leo, better known as "2 Dads,” is the crew's Electronics Technician, replacing the late Leading Seaman Josh Holiday ("E.T").

He made his debut onscreen appearance in Episode 2, Series 3, titled "Monkey Business.” 2 Dads’ time aboard the Hammersley starts off on the wrong foot.

He makes fast friends with Spider, and gets himself into much mischief, including a run-in into Buffer, over Nav's difficulties.

CO finally traces the rumor's back to 2 Dads, and warns him that if he makes mischief again, not only will he leave Hammersley, his position in the Navy will be terminated.

2 Dads laces their food with the ship's "industrial-strength" medical laxative with success, although details about the rest of the recovery remain undiscovered.