Based on "Vault" line Ultron
To start with, Ultron doesn't have hands in this version, he has claws. So, popping the cutter wheel onto my Dremel, I sliced the claws from the ball wrist joints. Then I took the hands from one of the knockoff Gundams I've been raiding for parts, fixed them up a bit and glued them to the pegs. The bond isn't as strong as I'd like, I've had to reglue the hands a couple times now, as the ball joint wrist is very stiff.
Next, I needed to change Ultron's spindly lower legs into the boots Tuxedo Blurr has. I cut away bits of the lower legs and lots of the feet and wrapped the boots of a Round Vernian model kit around them. This retained the ankle and knee articulation of the original figure, although there's some bits of ugliness I couldn't hide or fix around the ankles. I also added some putty to the shins to get a little closer to Zobovor's design. The head, chest pattern and shoulderpads were made from a combination of Milliput and some pieces cut from Noctorro's bubble package (which, for some reason, was still kicking around in my car's trunk). It took a lot of superglue to get the shoulderpads to stay down, and they ended up more angular than I'd have liked. I didn't notice the asymmetry in the chest pattern until I was halfway through painting it, and now I can't NOT notice it...sigh.
The cannon on the left arm was made from one of G2 Jazz's big green missiles. I used my Dremel to shape one end so that it'd sit nicely against the Lego 180 degree joint I dug up. The other end (the Q-tip-shaped front) I sliced the end off and then used a drill bit to hollow out. The whole thing I glued and puttied to the forearm of the figure.
The cape and scabbard presented an interesting challenge. I didn't want to attach it permanently to the figure, since that would have made painting much more difficult, plus restricted movement. Instead, I cut out a chevron-shaped piece of plastic and glued the fabric cape to it. I used superglue around the edges of the cloth to prevent unraveling, and it ended up drying into a nice warped shape that suggests a cape fluttering gently in the breeze (not visible in the scan, which has the cape squashed down by the scanner lid). BTW, the cape is a bright crimson, it's just in the background so it looks darker. I took a spare sword I had left over from some Spawn toy (She-Spawn, I think...the one I used for Minerva) and filed some of the Spawny bits off the scabbard, gluing it to the cape support. I filed down the sword a bit so it'd fit into the scabbard after painting, and glued a googly eye to the end as a pommel. Then I cut the clip from a cheap submachinegun that came with every Mortal Kombat figure I ever bought and glued/puttied it to the scabbard to act as a peg. The whole assembly fits snugly into one of the screw-holes on the figure's back.
I used various paints on this figure, mixing some green and yellow to get the vibrant "spark green" I needed for the toy. I was careful to put just enough paint on the faceplate to seem like full coverage, while leaving the light-up faceplate gimmick functional. It doesn't look great, since the paint's not totally even, but hey. The blue paint I used for details looks nice, but was a pain to work with on small details, especially the shoulderpads. I left the elbows and knees as unpainted as I could manage, since the paint would scrape off anyway. All 14 points of articulation from the original figure remain movable in the final product, plus an additional two because the Gundam hands can open and close. Actually, if you count the fact that the cannon can flip down, you have 17 total points of articulation, whee! I slathered the whole think in nail polish topcoat for durability. As a final flourish, I found some little acetate satin roses at Wal-Mart for 33 cents, and they happen to be just the right scale for the figure. The wire stems let them go in the figure's hands nicely, and the wire can be bundled up to jam in the cannon's barrel, since it's supposed to be able to shoot out roses.