An Other on the island.
- Episode 3x7, Not in Portland
Aldo guards the entrance to the building containing room 23. Alex pretends she has captured Kate and Sawyer and Kate knocks Aldo out with the butt of her rifle and they go in and save Karl.
- (Ep: 6x3, What Kate Does)
Aldo and fellow Other Justin go with Kate and Jin to track Sawyer. Kate knocks Aldo out and takes his gun, but later Aldo and Justin catch up to Jin. They are both shot by Claire.