How do you unlock Thanos

I have like 2,000 points and I go to the shop and all I see is alt. colors and galleries.

How do you get Thanos?

The characters unlock as you gain more points from hanging out in the Training Room and playing the game. He’ll eventually show up but IIRC he’s on the outside so he tends to show up later.

How many points, do you say, is required to see him?