Thanks!
I wanted to have a robot character that could switch between 3 forms… by scrolling on itch.io free game assets a found this : https://maidenlessduck.itch.io/robotbasepack (source in game and on game page)
It fitted perfectly with my idea + the tiles were also perfects for making some levels ! (I must admit that I got issues to animate the MC, it took a lot of time and you can see some animation errors in game)