It's NEKTANN.
Not Nikaan.
What I don't get though is why they didn't give Skrall a Lime green body and lime green old new hands for the feet connections.
Also,
I prefer Gresh over Tahu now. Tahu has an Av-toran head and too much orange, ut Gresh IMO has a much better colour scheme and weapons.
Yeah, I know it's Nektann lol.
Nektann...
Gresh is pretty cool. Having exclusive armour and a proper sized head helps a lot. And I liked green sets.
EDIT: The rahkshi spine is attached at 2 points:
1: attached to a trans-orange y joint hand pieces(like the original head was). The hand joint attaches to a Solek leg, which gets connected to the body with a Av-Matoran connector piece.
2: The back of the spine has 2 o holes 1 stud apart, which get attached to a second Av-Matoran connector piece.
http://www.brickshelf.com/gallery/Gazba/BZPower/StarsReview/yellow_rahkshi_06.jpgLook at that pic for all the pieces, and you can visualize how the whole thing works. Pretty smart, IMO. Nice way to make the boring build a bit better.