It's a bit late (almost mid-month!), but I did want to formally make this request for characters to be submitted. Next month, I want to do the first challenge, but said challenge requires people to have characters in the gallery. Grab the requisite template, draw a reference picture (or use a picture of you character you've already drawn--it doesn't have to be an exclusive picture to the group, though a new picture may need to be drawn if using a fan character whose look is intrinsically linked to that universe) with an optional picture of the character in civilian guise (even if your character wears a costume, this is optional for now, as the focus is to simply get your characters up, and that can be filled into the bio later--the May challenge would involve the characters in their normal heroic garb), and fill out the template with all the info you can put up.
Characters can be trans, cis, non-binary, etc. Magical girls, sentai, and other such manga-type protagonists are definitely welcome! They're superheroes, too. Just don't put up any character who isn't yours or can't be separated from a universe that isn't yours. If you only have fan characters, simply change aspects to divorce the character from the universe they were created for. An example (note: I don't make fan characters, so the one below is just an off-the-cuff random pairing/character):
A hypothetical fan character - Supergem, aka Agate Kent, the child of Superman and a gem from Steven Universe. Fights crime with a gem in their chest that is shaped like Superman's S shield.
A hypothetical alteration for Transworlds - Supergem (the name might be generic enough), aka Agate (their last name never revealed, or it could be a simple change, like naming after the philosopher Immanuel Kant), the child of two non-human parents, one of whom had great physical powers (strength, durability, flight, energy emission through the eyes) and the other biologically fused to a jewel that granted powers of shapeshifting and an ability to create a weapon of some sort of energy, with Agate getting abilities from both sides. Fights crime with the jewel shown on their chest exposed (if a shield-like look, not an angular shield like Superman's).
Alternatively, if you don't have a character of your own that you feel right using, you can also mine the public domain and open source superheroes for one that interests you. There are a couple wikis that can be helpful for this: Public Domain Super Heroes (pdsh.wikia.com
which has both public domain and open source characters, though, despite the name, features more than superheroes with literary, sci-fi, fantasy, jungle, Western, and such characters) and Open Source Super Heroes (ossh.wikia.com
which mainly has characters that are also on the previous, but a few that either haven't made it to PDSH or are exclusive to OSSH). Just remember: some public domain characters need one to tread lightly in using them (there's a version of Captain America in the public domain, though it's best to not call him Captain America, for instance) and most open source characters have some caveats to creating them (crediting the original creator or including a specific paragraph in their use are two of the examples). For the time being, an open source character can have, as a placeholder image (until the user draws them for themselves), the image used in their wiki profile (though it is highly encouraged to draw them yourself, and if not, as soon as possible--and in any event, it's best to have a picture that shows the character from head to toe).
So let's get these things going, because then we can all see your lovely characters!