A gray fetus, with a robotic eye.


Follows Isaac around, shooting enemies with a Technology laser with unlimited range. The shots pierce enemies just like Technology. Shots are fired in a straight line; they cannot be angled and don't provide any knockback.


  • This item is excellent for killing enemies from a safe distance, especially against dangerous bosses and foes who don't have long range attacks. The laser will damage all enemies in a line, making it effective against tight groups of enemies (The Duke of Flies, for example).
  • The downside is that Robo-Baby doesn't fire as often and doesn't provide knockback, thus making battles against monsters that chase Isaac more difficult (Lust or Gemini for example).
  • The lasers fired can mimic Isaac's current tear effects, such as Mom's Contacts or Spider Bite.


  • When Robo-Baby fires his laser at the same time as another "laser-shooting" enemy, such as Vis, the laser will become significantly larger, similar to having Technology and Polyphemus. However, it does not actually affect the damage of his laser.


Robo Baby Stacking With Tear Effects

Robo Baby Stacking With Tear Effects

Related Achievements

Robobaby "The Robo-Baby" - Kill Mom's Heart with Judas.

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