Part of the fun of Kenobi's photos is seeing characters interact who aren't normally part of the same universe. Here's Harley Quinn pushing Captain America into some very hot coffee. It's one of a few photos Kenobi has of Harley taking on unexpected superheroes.
For Kenobi, it seems that if an action figure exists, it's fair game to mix it with any other action figure. For example, this interaction between Deadpool and a Storm Trooper. It doesn't have to make sense, as long as it's fun.
Kenobi doesn't just limit himself to action figures of superheroes. He even got Bruce Lee and Freddie Mercury into the mix. It looks like Bruce is winning, but Freddie will probably come back with a command performance of "We Are The Champions."