Rayrobi said:
But anyway i think Rayman could not be scared much in the Marshes if he met Jano before, because then he should know what kinda creature Jano is. But he's scared much, and by this i mean that they must not met themselves before.
The fact that Rayman was scared of Jano is extremely inconclusive. Rayman being frightened when he unexpectedly encounters a monstrous enemy from his past is just as possible as Rayman being scared by an unknown creature he’s never seen before, and the Rayman Origins manual makes it pretty clear that Rayman put a stop to Jano back when he was created. There are continuity errors between the games, but this is not one of them.