This little Robotnick figure is uncommon.
He was made in the USA in 1992 by Tomy Toys and is likely a PVC figure. He doesn't bend or move, and is simply painted plastic. Since you couldn't actually DO anything with him but sit him on a shelf, he wasn't popular at the time of release, so you don't see many to this day, especially carded like this one is.
The figure itself is actually quite decent, as it is rather accurate to the AoSTH weekday cartoon Sonic show version, though here his eyes are pink and not red. There was also a Sonic figure released with this one by Tomy at the same time.