Mirage is my most played character at the moment, I just really like his kit. Very comfy to play. Tornado is such an amazing skill and once you get used to the mobility and on-demand iframes it's hard to go back. He's one of the best laners in the game which makes early game smooth and popping people with big Djinn's Marks is fun.

I also really enjoy Yamato, chunking people with big Power Slashes is satisfying and you can do sick turnarounds with her ult.

Most fun to play is probably Pocket though, but I still need a lot more practice before I feel I can confidently perform on him. I love all his skills but you really gotta be on the ball to maximise his potential.