What are some alternatives?
When comparing Marvelous DB and Spider-Man by Sphero, you can also consider the following products
Marvel (Comics) API - Create awesome stuff with the world's greatest comic API
Comic Cruncher - Visualize appearances per year of comic book characters 💥
Comixology Unlimited - Netflix for comics and graphics novels by Amazon
MangaDojo - MangaDojo is a community for manga artists and readers from all around the globe!
We Draw Comics - we draw comics is a place to draw and create JAM COMICS!
Storyboard - Press kit platform