Robot Oob -3, Nortluv, Tuo-Kcalb, and the negative counterparts were all featured in Operation Infiltration II. In the mission they were accidently transported to the Positive Dimension by Agent Boo's Time Machine. Robot Oob -3 tells the negative counterparts that they are in the Positive Dimension. They decide they need to find Onega X but they ended up running into their positive equivalents.
Agent Oob traps the positive counterparts in a cage and they eat Chip Chip Hurray, Agent Vortex mocks the negative counterparts, which makes Agent Oob angry and calls in Robot Oob -3 along with Tuo-Kcalb which was called by Agent Xetrov to attack the positive counterparts.
Later in the mission, they team up with Agent Batman and they end up finding their positive counterparts. However they see Agent Nightmare in his Nightmare ship and starts attacking the negative equivalents. Agent Oob and Agent Xetrov, however, get so angry they call in Robot Oob -3, Nortluv, and Tuo-Kcalb but Agent Boo and Agent Vortex call in Robot Boo 3, Vultron, and Black-Out. The robots start to fight eachother causing massive destruction.
After the destruction, Agent Oob and Agent Xetrov tell Robot Oob -3, Nortluv, and Tuo-Kcalb to scan Omega X (Earth-616), but they'll have to take forever while Agent Boo tells Robot Boo 3 to scan Omega (Earth-616) which scans perfectly fine.
Suddenly an earthquake starts to rumble and everyone sees that the Omega Tower is slowly tipping over. Agent Oob and Agent Xetrov try to tell their robots to escape. He and all of the negative couterparts return back to the Negative Dimension when the Omega Tower was about to be destroyed.
- Robot Oob -3 along with Nortluv and Tuo-Kcalb have a strong rivalry with Robot Boo 3, Vultron, and Black-Out.