Revealing mistake: When Solana removes her phone from her pocket, part of the strap on it is missing. (00:03:47)
Haruka Travels Through Time!! - S9-E12
Revealing mistake: When Edna gets her parasol, it teleports to her. (00:05:34)
Queen of the Serpentine! - S9-E13
Revealing mistake: When the title appears, it is duplicated. (00:01:17)
Pokémon Contest! Yuzuriha Convention!! - S9-E17
Revealing mistake: When Jessie walks over to May after she wins against her, Mime Jr's eyes and mouth are briefly missing. (00:14:06)
Revealing mistake: When Aipom runs off with the crown, its tail passes through a wall. (00:07:34)
Answer: He is a good guy but just found himself in a bad situation when he worked for Lysander. He didn't want him to harm Ash and his Pokémon when he was trying to get the special bond between Ash and his Greninja to work. He does leave Lysander and go back to being a good person.