Killer Robot Haikus

Wheels or feet or treads,
Run away, feeble humans,
Soon you'll all be dead

Number 5, for shame,
You should be zapping people,
Don't you remember?

Servos click and whirr,
Apertures adjust to dark,
The blood is now clear

Nice night for a walk,
Bill Paxton has no idea
his knife is useless

Chain guns and missiles
Cannot defeat the stairwell,
Squeal like a pig, ED

Taking lives is fun,
Too bad there are no feelings
In my CPU