I was lucky as a kid. My parents bought me quite a few of these and I still have most of them now. I had a removable cowl Batman (sold on ebay last year to help pay for my honeymoon), permanent cowled Batman, Robin, Superman, Aquaman, Wonder Woman, Batgirl, Spiderman, Captain America, Iron Man, Falcon, Shazam, Green Goblin, Catwoman, Mr. Mxyzptlk, Penguin, Joker, Riddler, Hulk, Star Trek crew plus the Klingon and the Gorn, Planet of the Apes Cornelius and Zira, Robin Hood, Batmobile, Batcycle, Batcopter, Spidercar, and the Enterprise playset. I also had their Ponch and Jon figures from CHiPs,
And that's just the 8" stuff!!
Boy, Mego made a ton of money off my parents!
And fastfreddie -- I ordered from that Heroes World, too! I got my last Aquaman from them. I even did a roadtrip to their store about 20 years ago but by then, Mego's had all but disappeared