I knew that back in the day Marvel sold off a bunch of movies rights to several studios, but I never completely knew who got what. I found this today and it helps simplify things a bit. Also take into account the various studios got not only the heroes in those titles but also the villains (like Doctor Doom), titles (like Mutant), and associated non-super characters (Franklin "Foggy" Nelson). and ,as with everything in life, there are notable exceptions to these rules (like Quicksilver, who is a Mutant and an Avenger). An online friend just sent me a more updated graphic.
I just ran across a 5th edition conversion for the TSR Star Frontiers game. Star Frontiers has always been a favorite of mine. Unfortunately I've only been able to play it a handful of times in the last 30+ years that its been around, but thats about to change. Thanks to Micheal Long a blogger on Tribality who wrote a great series of articles on converting Star Frontiers to 5E D&D. The articles have been gathered up, expanded on, and published in issue 11 of Frontier Explorer. Star Frontiers /5E is a perfect mini campaign for my players to explore when we are ready to take a break from slaying dragons but still want to stay with the same ruleset. Many of the old modules are online and there has been a great deal of fan support for Star Frontiers over the years in the form of at least two publications that I'm aware of - Star Frontiersman and Frontier Explorer. I really hope Micheal continues the series and adds more support for his 5E conversion. For now, a hearty thank you Micheal Long for your efforts!