First consideration for using commercial content is in making sure it meets “fair use” requirement or that you have permission from the commercial entity in question.
Second is in the finding of the content. How were the models obtained? Are they remakes? are the extracted from the game? Check eula for the game in question, some allow for mods which make the language of using existing content less constrained, while others will claim you can’t touch them for any reason. Meaning by extracting the models, it’s illegal to begin with. So while you may be allowed to show images of the model from in game screen shots for non commercial things, you can’t simply illegally rip the model and re-render them. So, that is something you want to look into.
lastly, does it have to be those characters? there are a lot of free to download creative commons 3D models. This frees you from any worry about copyright.