Taiki Kudo

Taiki Kudō (工藤 タイキ Kudō Taiki) is the main protagonist of the anime, an upbeat seventh grade boy who helps anyone in need. He excels in all sports and has a charming personality that wins over humans and Digimon alike, though he has a tendency to overexert himself. His Digimon partner is Shoutmon and he is given a red Xros Loader to enable Shoutmon to DigiXros with other Digimon. Taiki forms Team Xros Heart with Shoutmon and other allied Digimon, with the sole goal of making the Digital World a better place. Aside from his charisma, Taiki has proven himself to be an excellent strategist and can see through the enemy's plan and counters them accordingly, making his presence a necessity for the team. Unlike the other members of Xros Heart, Taiki is able to hear the 'melody' of Digimon that are in life-threatening danger. During their travels they meet many friendly Digimon who join their cause and they face the evil minions of the Bagra Army as well as the rival groups Blue Flare and Twilight, allowing the group's former general Nene and her Digimon friends to join their group. However, once all 108 Code Crowns were claimed, Bagramon manages to take all the Code Crowns for himself before sending Taiki, Akari, Zenjirō, and Shoutmon. In the real world, Taiki learns that time in the real world is slower than in the Digital World before he attempts to find a way back to the Digital World. By then, the one who gave him his Xros Loader is revealed to be Omnimon, who reveals the origin of the DigiMemories and the history of the digital world and tells them how he ended up in the human world as a digimemory and has been searching for Taiki as only he hear the digital melody. After enabling Shoutmon to Digivolve into OmegaShoutmon to defeat Tactimon, Taiki leaves to the digital world with Shoutmon. Upon returning to the Digital World, Taiki and Shoutmon learn that Bagramon had it reconstructed into a realm surrounding by Seven Kingdoms, each ruled by a Digimon general with their own Darkness Loaders. Reunited with their Xros Heart allies, Taiki and Nene convince Kiriha to join forces with them and they set to travel together through the Kingdoms to challenge the generals and liberate the Digital World from the Bagramon Army's oppression. After the final battle of DarknessBagramon, the Xros Heart Digimon return back to the Digital World.
One year later, Taiki, now in the eighth grade, formed the "Xros Heart Street Basketball Team" with Yū and Tagiru. When Digimon begin escaping the Digital World to terrorize humans and gain power from their emotions, Taiki reunites with Shoutmon and other Xros Heart allies to solve the mystery of the attacks.

partner
Shoutmon (シャウトモン Shautomon) is a ferocious dragon Digimon with extremely high aggressiveness due to hot-blooded enthusiasm, yet friendly towards his comrades. He enjoys singing and wields a microphone for leisure and to help in combat, his chances of winning depending on the amount of passion he has. When wounded while protecting the Village of Smiles from the Bagra Army's invasion of the Green Zone, Shoutmon met Taiki as the two eventually join forces to save his home from the invaders. Becoming Taiki's Digimon partner, Shoutmon's goal is to become Digimon King in order to better protect others, seeing the Code Crowns as a mean to fulfill his desire. During Xros Heart's time in the Shinobi Zone, Shoutmon DigiXrossed with other members of Xros Heart. These forms are ShouCutemon (シャキュートモン Shaukyūtomon, with Cutemon), DonShoutmon (ドンシャウトモン Donshautomon, with Dondokomon), JijiShoutmon (ジジシャウトモン Jijishautomon, with Jijimon), PawnShoutmon (ポーンシャウトモン Pōnshautomon, with a PawnChessmon), and Shonitamon (シャニタモン Shaunitamon, with a Monitamon). Shoutmon acts as the core component all Xros Heart's main DigiXrosses, ultimately fusing himself with all the Digimon he met during his journey to take down Bagramon and save the Digital World. After the battle against DarknessBagramon, Shoutmon works hard to improve the newly reformed Digital World as the new Digimon King, until several Digimon start disappearing into DigiQuartz and he joins forces with Taiki once again looking to find the reason for it.