Just a quick way how to create a character.
You will need Adobe Fuse, the support for this software was cancelled by Adobe in 2020, but it can still be downloaded from Steam: https://store.steampowered.com/app/257400/Fuse/?l=english
After creating the character in Fuse, you can find plenty of animation in Mixamo and import it to Maya easily. Watch the video for more:
The character can be also rigged using the Mixamo plug in for Maya. In case you want to rig the character, I recommend this tutorial: https://www.youtube.com/watch?v=YnNt9qA1Xf4