A free program for Android, by Game Science Inc.

Take your voice recording to a new level with the Superheroes Voice Effects & Voice Changer & Maker app! This application is a fun way of experimenting with different types of voice effects you can incorporate into your recordings. 

It also allows you to create funny impressions of popular fictional characters. With this app, you can transform into various movie characters, from the cute chipmunk sound of Alvin to the terrifying tone of Darth Vader. No need to modulate your voice; the app’s clever technology will do the trick for you!

You can download this app on your Android device for free and have fun trying out the awesome effects available.