Screen fade sillhouette

Hello!

I am trying to achieve a screen fade to black with a character silhouette like the one seen on this video. YOOKA-LAYLEE (Toybox Pre-Alpha) - That Bat's A Creeper - YouTube Min 14 second 26.

I managed to create a fade screen to black with matinees but I can’t figure out how to create this effect.

Any advice or method to accomplish this?

Thanks in advance.