[Question] Create a glow effect on transparent sprites

Unity Engine
1

Hi there forum,
I’m quite new to game programming so I need some help from you.
I want to change a black/white sprite in game into a ghost.
Making it only transparent is not cutting it so I tried to find a way to make the sprite glow from behind.

After some search shaders were the way to go but must solutions are building a glow around the sprite.
Do you have any solutions to make the whole sprite “glow” or maybe other ways to create a “ghost” effect?

2

If you don’t want to get in deep with shaders or image effects, you could activate a particle system behind or around the sprite with soft particles appearing and fading out at random.