You won't find a "comic book" lens filter in the Camera app or even in the Photos app where you would expect it to be, but the filter does exist - buried in the Messages app. Why Apple hasn't just added the filter to Camera and Photos is anybody's guess, this way can be a royal pain if you want to take a lot of comic style photos not only because of the extra steps to get there, but because you have to apply the filter before taking the photo, you can't add it after like you can with the photos in the Photos app.
If you aren't a fan of Memoji, the customizable human Animoji, and you are a minimalist, you probably don't want the Memoji stickers showing up in your Messages app, especially since they appear in your frequently used emoji. Up until now you could only hide the sticker pack from the options appearing above the keyboard, but you would still see them in your emoji options. iOS 13.3, however, lets you get rid of them altogether. Here's how to remove Memoji from your Messages app on iPhone and iPad: