|Appears in||Terror from Outer Space|
|Shots to defeat||3 rapid shots|
The Proto Bleech is a creature in the Keen 4 mod The Terror from Outer Space by Dr. Colossus. These creatures kill Commander Keen with one contact, presumably by devouring him. It takes three quick shots in a row to bring it to explode. But even in their death they are dangerous. After the Proto Bleech has exploded it leaves a deadly pile of guts. This is then impossible to get rid of, so watch out for them in closed spaces!