EDIT: an excerpt from a MSN conversation 4I and I had.

4I Falcon says:
All three of the Hellbots were programmed to kill all rabbits.
BigBadBen says:
O_o
4I Falcon says:
Omicron was the only one that was suspiciously tweaked.
BigBadBen says:
aha...
4I Falcon says:
So, we'll just say that Jiaike tweaked Omicron a second time, and that's that.
BigBadBen says:
erm
BigBadBen says:
how about Terminater
BigBadBen says:
he's the original efil person
4I Falcon says:
True.
4I Falcon says:
Okay, Terminator tweaked Omicron, but after his death the robot couldn't tell the difference between Terminator and Jiaike, due to some stupid malfunction of some sort.
BigBadBen says:
hmm
BigBadBen says:
I'd say the fall off the ship could've fried his memory
BigBadBen says:
or the electro blaster
4I Falcon says:
More than likely the electro blaster.
BigBadBen says:
yeah.
4I Falcon says:
The fall would have either just damaged his armour, or completely destroyed his hard drive.
4I Falcon says:
I've found that out the hard way after kicking my computer once too hard.
BigBadBen says:
oops.