Hello. We have no plans to add male characters just yet, if we did the total amount of work would be very large. So a feature like that would only come after everything else is done.
For the gallery question, we don't have traditional scenes or something like that. But in the build we are about to release you can build up friendliness with a species of monster and do unlocked sex acts with them as you want. Kinda like a gallery I guess.