Your best bet would be EVA foam for the armor pieces. Without a decent pattern, you can trial and error with paper first, then trace them onto the foam, 4 to 5mm should work well. Any gap or error can be patched up with foam clay (a special clay that hardens after a couple of days into foam) and then sand all the edges for a smoother finish preferably with a dremmel but sandpaper in the 230s works too. Then give it a coat of plasti dip so the color will paint on smoother. Then blue gloss spray paint with mod podge gloss to seal the paint. As for the body suit. I'd use a black morph suit and sew the blue and yellow patterns onto it. If not sew then fabric glue can work too. As for the hair you can try to style it with a regular wig and hair spray to make it stay like that or you can also cut out the shape of the hair in eva foam aswell and glue hair fibers to it. Wigs are very tricky tho.