I used an app called pixlr x to make this. If you want to use it just ask/tell me. Okay if you want to do this here is how I did it. Look up the character you want and find a image that is 500x500. Make sure the image is black and white for the best out come. Then look up a color and download that image too. The got to https://pixlr.com/x/ and open the pic of the character. The create a new layer and click image. Drag the color layer to the top. Then select the color pic. Click the "..." on the color layer. Under "Blend mode" find which one you like best. The one I use is overlay and screen. Hope this helps!
I got inspiration from @Mina_AshidoTheAlien from her pfp shop!