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 and Dawn. His biggest rival is Zoey.
As a Budew, it showed talents that could be used for either gym battles or contests. It then evolved into Roselia and Nando decided to do both. It was revealed Roselia won Nando his first Gym badge at Eterna City. It was seen being used in the second battle stage of a contest where it won against Zoey with a powerful Petal Dance. It had been revealed to have evolved into a Roserade at the Grand Festival where it was used alongside Sunflora and Altaria showing off its musical talents. Its full battling skills where shown at the Lilly of the Vally island where it faced off against Ash.
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. It was used to get Nando to the semi-finals alongside Roserade.
He uses Kricketune in Gym battles and Contests winning him the Hearthome contest in its debut. It was later used in the Grand Festival teaming up with Lopunny in the semi-finals. However it lost by a small margin.
Altaris debuted alongside Nando's Kricketot in first round stage of the Pokémon Grand Festival where it used its magical voice to create a musical performance which got him to the second round it was used in the top 16 matches alongside his newly evolved Roserade, showing a Sunny day and Aerial Ace combination.
Nando's Kricketot debuted in the Pokémon Grand Festival first stage where its singing talent gave a magical performance it was later used alongiside its evolved form in the first double battle where it won.
Nando used Lopunny during his Grand Festival Semi-Final match against Zoey. It wasn't used for sing but instead used as a dancer and using a combination of Bug Buzz. Lopunny danced, lowering Zoey's points dramasticly. It battled hard and showed amazing talent. However in the end, it lost by a small point difference and therefore losing the semi-finals.
Armaldo is the last of Nando's Pokémon seen. Nando used it in his Sinnoh League battle 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.