[TOMT] Science fiction horror movie of the 80's involving killer robots, one of which were small, moved underground and jumped out to kill people.

Another thing, I remember I always confused it with "Scanners" due to similar sounding names. But don't take that hint very much into account, it could be just me getting things all wrong.

Solved! The movie was "Screamers." Thanks RocknRollMcDonalds!