I've decided I'm going to cosplay as my idea of a human disguise for INVADER TENN for a friend's costume party this July
, and I've discovered the trick when deciding to cosplay ANYTHING done by Mr. Vasquez; remember that in OUR universe, ZiM, GiR, Dib, Gaz, etc. wouldn't be so BLOCKY. Make the costume for IZ the same way you would for Death Note or Sailor Moon; REALISTIC. That right there can really make or break a ZiM, Dib, or Gaz cosplayer. The only TRULY acceptable reason to have a cardboard box on your head, in my opinion, is when you are cosplaying as GiR, or even SKOODGE!
Hope this helps!