Lore explained on who could have killed all sprunkis

So firstly. A lot of people think black is the killer becuse when you put black the horror starts. Also some people think its wenda too.
But however think about durple and jevin.
Jevin is mysterious meanwhile durple strches his mouth. Now it could be possible its all of them or one of them. Black has no blood. But is creepy. Wenda has blood and is crazy
Jevin is mysterious, and durple streches his mouth. In my theory, it could be wenda, durple, and black. Whatu think bout my theory?