These were issued by Mattel in 1992-1994, although I don't have any from that late. They all have names, but I don't remember what they are anymore. I was able to find examples of some of them for sale on Ebay and got the names that way, but I would gladly accept some naming help on the rest if anyone knows.
These are 1/64 or close to it, but I couldn't decide to list them with my car collection or my action figure collection, heh. 4 of them make growling sounds when you open them, 3 of them still work, with the original batteries, 19 years after being issued at time of photography, August 2012.