How would you do this trail-like effect?

How would you do this trail-like effect on a sprite?

https://www.scirra.com/arcade/action-games/monster-rush-18784

Create a Trail sprite with the same picture as your main character. Add Fade behavior with about 0.2s fade out time and set "Destroy after fade out=Yes" .

When your main character sprite is flying, spawn that Trail sprite approximately every 0.05 seconds at character position, set random angle.