XJ-2  is the second prototype sister of Jenny created by Dr. Nora Wakeman.

Appearance and Personality

XJ-2 is an XJ prototype robot that works as some sort of ray gun. Her biggest defect is that she suffers from uncontrollable hiccups and accidentally shoots plasma beams out of her nozzle-like mouth.



  • XJ-2 does not talk, but she indistinctly utters the word "hiccup" when accidentally shooting out her rays.
  • She is reminded by Dr. Wakeman in Sister Sledgehammer to hold her breath so she can control her ray blasts, but this only causes her to backfire (explosively fire her laser from the back).


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