Both would be cool to get. 🙂
So the goofy looking Kirby Shellshock is a hard pass. It looks like Mad Thinker lost a little weight and picked up a gun and changed into some brown pajamas from his normal green ones. But, the later version in the orange and blue suit and the black devil mask - that I would buy as a figure. It would just look really good on the shelf.
And BIG yes to Monark Starstalker. I'm a sucker for that kind of space paladin motif. I honestly have a recipe to make a Monark Starstalker for my MOTUC collection... he's the kind of character, along with DC's Warlord, that I feel can really fit into the stuff MOTU does. But if we got him in Legends I would not be mad at it.
I'd be in for the later-costumed Shellshock, as well as Monarch Starstalker. Always room on the cosmic shelf to add more.
None of these are essential for my collection. But I'd be ok with the latter Shellshock or Monark Starstalker in a baf wave I was interested in.