J-Bot was humanoid and bepedal. He had a grey and white chassis, and transluscent red dome on his head.
J-Bot was an attentive servant of Dr. Venture and his sons after they moved into VenTech Tower. This caused resentment in H.E.L.P.eR., who felt like his position was being usurped.
When the Crusader Action League descended on VenTech Tower (due to a misunderstanding), J-Bot warned Dr. Venture of the danger. J-Bot then proceeded to confront the intruders, displaying his offensive capabilities. J-Bot was subdued by Stars and Garters, who pinned J-Bot under his shield.
When the fracas was over, H.E.L.P.eR. took advantage of the confusion to push J-Bot over the side of the balcony. J-Bot presumably fell a great distance and was damaged beyond repair. His absence was noted by Dr. Venture, though H.E.L.P.eR. feigned ignorance about J-Bot's fate.
- J-Bot's name continues JJ's habit of naming inventions after himself, such as the J-Phone and J-Pad.
- J-Bot's design is similar to the androids shown serving guests on the space station Gargantua-2.