The number of Marvel comic heroes is constantly changing and growing. As of now, there are well over 8000 characters, but new ones are always being introduced.
Morbius is indeed based on a comic. The comic served as the foundation, and the movie built upon it, bringing the character and his story to the big screen.
Loxias Crown is also an important character in the Morbius comic book story. He has his own motives and often gets involved in Morbius' affairs, whether it's in a helpful or antagonistic way.
Morbius is part of the Marvel Comics stable. His character has been featured in various Marvel comic publications, often interacting with other popular Marvel heroes and villains.