Custom 2d character & animation for Android app.

Hello Everyone, In this project I need a custom-made characters for a 2d game app @ android. Details of characters: 1) The main character: This character should hold a guitar while walking and when enters Attack mode the guitar is directed forward to hit enemies. Situations that the main character have: Walking and Attacking . Clothing: T-shirt and jeans 2) regular character: This charactergoes only with a knife and had only walking modes. Clothing: a blue shirt and jeans 3) the bad character: This character goes only with a knife and had only walking modes. Clothing: a red shirt and jeans I need the files in PNG format and include the original files. All the character needs to be in 4 diffrent size as my app need to support: hdpi (high) ~240dpi xhdpi (extra-high) ~320dpi xxhdpi (extra-extra-high) ~480dpi xxxhdpi (extra-extra-extra-high) ~640dpi