The Marvel/Avengers Roleplaying & OC Creation Resource Kit
I've created and found a lot of resources that are pretty handy for, or are even aimed at (or in the general direction of) Marvel/Avengers roleplayers, particularly those who create OCs, so I figured I might as well put links to all of 'em on the same page for easy access.
Things I Made
A Few Things To Remember To Improve Your Marvel Characters, Roleplays, & Fanfics
Some pointers and things to keep in mind to create more believable characters and scenarios.
Character Creation & Development Theory (Or, How To Make Characters 101!)
Some basics to keep in mind.
So You Wanna Write A Powerful Character That Probably Won't Be Perceived As A Mary Sue?
Many people have complained that their powerful OCs get labeled Mary Sues unfairly - hence this page.
Basic Tips To Improve Your OCs & Fan Characters
Some things to keep in mind when creating and developing your characters.
Tips To Create Better OC Relatives of Canon Characters
For if you plan to make your OC related to a canon character.
Common, Yet Terrible Character Descriptors - And How To Fix Them (And Write Better Descriptions In General)
If you want people to respond well to your OCs, you need to be able to present a good pitch. Get some pointers here.
Common Problems In Roleplaying Characters
Frequently-seen problems amongst roleplaying characters these days.
Character Development Questions
Questions to help you develop your characters.
Television Drama Name Generator
Assuming your character is from the US, this will take care of the better part of your naming needs.
Basic Character Appearance Generator
Get a random basic set of looks.
Hazards & Liabilities In Hair, Costume, & Wardrobe
Some things to keep in mind when designing a superhero costume.
Tricks & Tips For Naming Superheroes & Supervillains
In case your character needs more than just a civilian name.
Superhero & Supervillain Name Origin Generator
A tool to help you figure out what your character's superhero/villain name should be.
How You Got Your Superpowers
Get a snippet of backstory explaining how your character got xir powers.
Yet Another Superpower Generation Tool
A method to come up with powers for superheroes and supervillains using dice.
Random Superpower Generator
Randomly roll up some superpowers.
Useful for helping you develop and define your character's superpowers.
Character Detail Generators
Randomly come up with all sorts of useful things - flaws, motivations, interests, etc.
Location of Stark/Avengers Tower on Google Maps
Same place as the MetLife Building.
Location of Stark/Avengers Mansion on Google Maps
Same place as the Frick Collection.
Marvel Universe Wiki
Marvel's official wiki. Useful for looking up characters and such.
A fan-run wiki, also very useful.
Marvel Cinematic Universe Wiki
A wiki dedicated to the Marvel Cinematic Universe.
Marvel Cinematic Universe Wiki (another one)
Another wiki dedicated to the Marvel Cinematic Universe.