Lookers are small insect-like creatures that run straight to the player and explode. Looker can only be found Marathon.
Lookers are large, floating beetle-like creatures who run at the player or the BOBs and explode violently, dealing a considerable amount of damage.
As they often inhabit tight corridors, it can be difficult to escape these explosions. It is not clear whether they are merely pests that infest Pfhor ships or are controlled by the Pfhor. The player first encounters Lookers in Colony Ship For Sale, Cheap and they are often found hiding behind corners waiting for the player to pass.
Lookers are seen only in the first Marathon installment.