Two of the three Glooms caught in the Safari Zone. The two Glooms evolved into Vileplumes, but one of Gloom refuse to evolve with his Leaf Stone. After Samuel won the Kanto League, his Vileplumes sent to Peter's lab to taken care of it except for Gloom. His first and male Vileplume's attacks are Razor Leaf, Poison Powder, Petal Dance and Stun Spore. The second and female Vileplume's attack are Razor Leaf, Sleep Powder, Petal Dance and Stun Spore. His Vileplumes' levels were now 42 (originally 26).
Gengar was sixth member. As Haunter, he was caught by Samuel who toying and playing with him along with ghostly trio. He battle against few Gym Leaders, Elite Four as well Battle Frontier (but exception with Sabrina and Richal).
Samuel's Bellossom was the support Pokemon to used in battle in Kanto arc and main Pokemon in Johto arc. As Gloom, she was caught in Safari Zone. She refused to evolve Vileplume. While in Johto arc, Samuel tried to make Gloom evolve, but she instantly refused again. Until now, Gloom evolve into Bellossom using the Sun Stone instead of Vileplume. With Team Rocket blast off, she taken care to Bailey for dancing and she accepted to raise her. Samuel goodbye to his Bellossom who remembering her as Gloom. She was now level 43 (originally 28 and 37). Her moves are Solarbeam, Razor Leaf, Petal Dance and Sunny Day.
Linoone was first Pokemon who ever caught by Samuel before his quest. As Zigzagoon, he was abandoned by his original trainer named Billy K because he was too weak to fight. The girl named Kelly who got lost in the forest and hurt. As he calm Zigzagoon, he becomes Samuel's friend and end up training. When Samuel enter his first contest, Billy K was entered the contest as well and looked his Zigzagoon and calling him a "dumb". Samuel encourages Zigzagoon to beat Mightyena and evolved into Linoone to defeat Billy's Mightyena. After Billy "apologize", however, Linoone didn't because he was no good. Samuel and Linoone become new friend. After Samuel trained hard, Linoone kept to Birch's Lab for safety. He was returned to Samuel's hand. As Samuel meet Kelly again, he takes Linoone with her to enter the contest. When the contest was over, Linoone taken cared by Kelly that she need to hard work and Samuel saying goodbye to his old friend. His level was now 53 (originally 9).
Slowking and Shell-Met were two Pokemons that caught by Samuel when Shellder bit his head which is never evolve into Slowbro before in the Daycare. Both Slowking and Shellder were level 50 and fact Slowking was the male and Shell-Met is female.