Nando is a rather unique trainer in that he is battling in both contests and gyms with the hope of being in both the Pokémon League and the Grand Festivals in Sinnoh. He is a competent trainer and also enjoys to play on his harp, which is shaped like a Mew. Due to his taking up of both vocations, he is a rival to both Ash & Dawn.
Roserade was seen briefly during the Grand Festival in Sinnoh. Having evolved from Roselia, it was used in battle, teamed with Sunflora to assist Nando in getting to the Semi-Finals. It was later used during his Sinnoh League match against Ash. It has many powerful attacks at its disposal such as Magical Leaf and Solar Beam and also has the ability to slow its foes with moves such as Sweet Scent. However, it eventually fell in battle against Ash's Staraptor.
Little is known of Nando's Kricketune. He used it in his Hearthome Contest campaign in a Double Performance with his Sunflora and later in the Grand Festival teamed with Lopunny where it easily won with is fighting skills and use of attacks such as Sing, Bug Buzz, Silver Wind, and X-Scissor.
Armaldo is the last of Nando's Pokémon seen. Nando used it in his Sinnoh League battle against Ash. Sent against Ash's Quilava, it used its attacks such as Rock Blast and X-Scissor to try and defeat its enemy. It also has the defensive move of Protect to try and defend itself from Quilava's attacks. It eventually fell in battle to Quilava.
Sunflora's first appearance had it as a suspect in a case where Team Rocket had stolen the Adamant Orb from a museum in Eterna City. Sunflora was used in contest battles and appears to have strong fighting skills, though the full extent of which is yet to be seen.
Altaria was the other of Nando's Pokémon which he used during the appeal round of the Grand Festival. It has some dazzling attacks such as Perish Song which helped Nando progress through the Grand Festival through stunning appeals.
Nando also has a Kricketot. It is used during Nando's Grand Festival appeal process and has numerous attacks such as Sing at its disposal in order to help create dazzling appeals.
Nando used Lopunny during his Grand Festival Semi-Final match against Zoey. It used many powerful attacks such as Kick and Sing in order to dazzle its foes, but eventually it lost by a small margin.