I started a small series of independent Flood customs back awhile ago, starting with the Elite Combat form and then moved onwards to the Human Combat Form. I've also done a series crossover hybrid of a Predator Combat Form and a Xenomorph Combat Form. Although the Xenomorph Combat Form is made by infecting a Flood combat form with a Facehugger due to its acidic blood preventing itself from being infected. Both of these hybrids are part of my fan series crossover, Predatorial Halo.

Nothing much was done besides a repaint of a bald G.I Joe figure and adding tendrils to the chest which were made of Pipe cleaners. I should actually be adding some new things to the figure such as claws, and a Flood Infection form to the chest.