I unfortunately haven't made many mocs that go beyond using custom masks, but I suddenly remembered I did have one that used probably the first 3d-printed piece I ever purchased. The chest piece was made by Cezium, GiTD Akaku was made by Socketball, the GiTD protector mask and purple eye-socket were done by Ziontryo.
My main goal with this moc was just to use the Akaku, but it evolved from there. Saw the GiTD as a sort of radioactive glow hence why I included the sickly green shell pieces.
The purple is just there given the Akaku had purple lenses.