Reply To: Modding
Keep in mind if you're editing the image files you might also need to understand their accompanying .dat files, which contain hexadecimal information regarding each sprite's coordinates, bounding box, and origin point.
I'm going to be trying to make my own image mod as well, but I want to go in the opposite direction as @beakymcfeather in that I want to have Toons-style sprites. The problem is Hal - not only is he not in any games that have Toons-style character animations (so I have to make new ones from scratch), but he has three different designs:
The Chrome design seems to be coming back, as it's in the achievement icons for AB Blast, as well as the Messenger game "Flip the Bird" and the splash screen for AB Messenger. The bottom one appears in the mobile version of AB Friends.
So I'm not sure which of his designs to use.