I knew that Serperior, Emboar and Samurott were physically seen only in the Black & White anime series. However, unfortunately, none of the wild and trained Serperior, Emboar and Samurott were seen in any of the other next series to the present, even though Samurott was the only one of them seen only in the only one of the To Be a Pokémon Master episode, "Must Be Our Heroes and the Witch!", but as seen by Misty in Hatterene's own created illusionary fantasy for her. Now I wonder why you think that Serperior, Emboar and Samurott weren’t physically seen in any of the episodes from the post-Black & White anime series, even including for throughout Ash’s main anime story? Please let me know, thanks.😉