Nascour (Japanese: ジャキラJakira) is a man with a terrifying visage. He is gaunt, dressed in dark clothes and possesses wiry, gray, serpentine hair. He is the only character in the games to have the Trainer classCipher (Japanese: シャドーShadow).
Nascour's strategy in battle is to use X Special and other stat-enhancing items on his Pokémon.
At the Realgam Tower, Nascour welcomes the player and Rui to the tower. He then has the player battle a gauntlet of four Trainers at the Tower Colosseum at the top of the tower, before taking on the player himself. Even with a mighty ShadowMetagross on his side, Nascour is no match for the player. Upon being defeated, he is devastated by his loss and tries to demand a rematch. However, he's interrupted by the arrival of Mayor Es Cade, who reveals himself to be Evice, the true villainous mastermind leading Cipher. After the player defeats Evice, Nascour is arrested along with him by Chief Sherles.
"Ah, you've finally reached me. I must say that I am impressed. <Player> and <partner>, I welcome you to the Realgam Tower. My name is Nascour. Do you remember? The time that we met in Phenac City? I did have the feeling that I would one day face you in battle... But I never imagined that you would be the one to seek me out here. Very soon, we will be ready to greet your arrival in style. I will go ahead and wait for you. Don't keep me waiting too long."
"What kept you, <player>? I was worried that perhaps Gonzap had beaten you. The time has come for you to pay off some debts. We'll have you battle as payment towards the huge losses you inflicted on us. I expect to see spectacular battling out of you. After all, you're here to entertain! Waahahahah!"
Before battle, after defeating the four Trainers
"Bravo! Bravo! Well done! Why not become a Cipher show-battle trainer? Would you even consider it? I'll vouch that you will become a top star in no time. ...I wouldn't have minded making that proposition, but I'm afraid I'm not that bighearted. I will destroy you in battle right now. You will know the humiliation of total domination before this crowd!"
"N-no! There's no... This can't be happening!"
After being defeated
"Gaaaah! It's not over, <player>! Come on, we shall battle..."