1) A Go-Bot

2) aka GoBot

3) Children's toy (vehicle) that turned into a robot
(well, sort-of) by means of a few simple twists,
smaller and less expensive than a Transformer (heck,
even the Go-bot Cartoon show was cheaper and cheeseier
than the Transformer's Cartoon, notice there's no
Go-bots movie), BUT at least you didn't need to read
the instructions each time just to transform a Go-bot!
They were much simpler and tougher.

4) Probably the coolest toy of the it's time (20 years ago
or so). If you were really poor like me, your Go-bot
was a rock or a stick, which you had to pretend turned
into a robot or something.