Det

Dets fire lasers in four directions (either in a + or x formation) and explode upon death. Depending on the room they are found in, they will either slowly drift around in a set pattern or they will remain stationary. Dets look slightly different depending on which formation they fire lasers in; Dets with normal eyes fire lasers in a + formation while Dets with X eyes fire lasers in an X formation.

Trivia

 * The blurb "Add and Multiply" is in reference to their attack patterns, + and x respectively, being the mathematical signs of addition and multiplication.
 * The name is possibly a play on words, combining "detonate/detonation" and the mathematical term "determinant", which involves long sequences of addition and multiplication.