The 3 heads say S/T&B on the back and are about 45mm tall. They have space for batteries on the bottom and presumably light up. I guess they are Gashapon. (Also if anyone wants these heads you can have them for $1+Postage- which may be a lot as I'm in the UK)
Robot Heads (1).JPG 40.33K 2 downloads
Robot Heads (2).JPG 31.98K 2 downloads
Robot Heads (3).JPG 45.17K 3 downloads
I think the other 3 are Nintendo, the cat thing says Nintendo 2009, the skull says Nintendo 2017 the other guy has no markings
Robot Heads (4).JPG 30.78K 2 downloads