Kyoufu Kawa released another small technical demo for the Gameboy Advance.
Release notes:
The kind of multi-part sprites like in the old Sonic games where a single character of non-hardware-native size is built up from several smaller sprites.
http://helmetedrodent.kickassgamers.com/animdemo.rar
This displays a robot dude built up from varying amounts of loose parts.
I have the groundwork for a sprite assembly editor down already but I’m not developing it unless you think this is interesting.
What you could do is define an actor struct that holds the character’s X/Y coordinates and some kind of pointer to his sprite data.