Terra

"You have to be strong. Strength of heart will carry you through the hardest of trials."
 * —Terra to Cinderella upon their first meeting

Terra is one of the main protagonists in Kingdom Hearts Birth by Sleep. Terra, along with his best friends Ventus and Aqua, is a Keyblade apprentice, and it is his dream to reach the rank of Master.

Why He Rocks

 * 1) Terra's calm and cool exterior hides a heart that would fight for his friends, oblivious to the fact that Master Xehanort is attempting to seduce him into darkness, he begins to doubt those closest to him, and only recognizes his mistakes after the fact.
 * 2) He shares a strong bond with his partners, Aqua and Ventus.
 * 3) He chooses Riku as his successor, making Riku destined to wield the Keyblade in the future.
 * 4) He summons his Keyblade in a very unique way. The weapon is summoned like data, the numbers then replaced by small cubes.
 * 5) His experiences with darkness bring a negative vibe to him, but Terra holds his bond with Ventus and Aqua in high esteem, willing to fight for them despite his ties to the darkness, and wishing to help them long after his possession. This is seen with both the new Xehanort and the Lingering Will, both instances of Terra's faded consciousness acting on Ventus's and Aqua's behalf.
 * 6) He also holds Master Eraqus in high regard, viewing him as a surrogate father, which he proclaims to Xehanort. After destroying Master Eraqus in order to save Ventus, Terra mourns his loss greatly and sheds tears for his Master.
 * 7) After years of Xehanort successfully taking over his body and never being able to recover it, it was nice to Terra, who is revealed to be Terra-Xehanort's Guardian, grab Xehanort's face and then finally reclaim his body with Sora's help, killing this incarnation of Xehanort entirely and finally ending the long nightmare, and reuniting with Ventus and Aqua.

Bad Qualities

 * 1) Terra struggles to keep himself on the right path, and is constantly tempted by the power of darkness, similarly to Riku.
 * 2) While not gullible, Terra can be overly trusting, which most villains use to their advantage, leading to several of his misadventures.
 * 3) His English voice actor, Jason Dohring, didn't really put in much of a great performance in Birth by Sleep. Thankfully, he improved in the following games, especially III
 * 4) Despite that freeing him from Master Xehanort's control is one of the pivotal moments in Kingdom Hearts III, Terra doesn't actually get to do much or take part in the fight and only gets rescued before the final battle.

Trivia

 * His name means "Earth" in Latin, in Italian, in Portuguese and in Catalan, similar to Riku's name in Japanese meaning "land".
 * The official Japanese website refers to Terra as the "Vast Earth Protecting Bonds" (絆守る大地 Kizuna Mamoru Daichi?).