Emil Castagnier

Character
Emil Castagnier is the main protagonist of Tales of Symphonia: Dawn of  the New World. His parents were killed by Lloyd Irving the main protagonist in the original Tales of Symphonia. He is portrayed as a coward, but promises to protect Marta Lualdi, the bearer of the Ratatosk Core by forming a contract with Tenebrae. He gets strength to fight against against monsters through this contract, making his voice deepen, eyes turning red, and spine growing. When in that form Emil is more violent and blood thirsty, which is why some call him a monster. This form is later on called as Ratatosk Mode. His goal is to help Marta and to avenge his parents.

Family
Emil's parents were killed by Lloyd Irving in the Purge of Blood in Palmacosta. With his mother's last breath, he was told to find his aunt in Luin to ask her to take care of him. However, because Emil somehow looks different from how they knew him, as well because he is against Lloyd, he is treated hard by his uncle and aunt. They later reconcile, however.

The real Emil Castagnier
Later on in the story it is discovered that Emil is not really Emil Castagnier. His identity was stolen by Ratatosk in order for the latter to hide his natural shape after being attacked by Richter Abend, and his memories and a false personality were imprinted in it, leading to the Emil who acts as the protagonist in the story. The real Emil supposedly died in the Purge of Blood in Palmacosta, and as such Ratatosk was unable to fully confirm his appearance, leading him to mimic Astel's appearance. Right before her death, Rana, Emil's mother, could see that "Emil" had changed, but she was probably too hurt to fully confirm it before she died.

Family
The real Emil Castagnier's father and mother were named Reisol and Rana Castagnier respectly. They were probably against Lloyd, hinting this when they were afraid for Lloyd killing when in the Purge of Blood. They are killed by a Lloyd-looking Decus, and with her last breath, Rana tells "Emil" (who is in reality Ratatosk) to go to her younger sister in Luin, Furol, and her husband, Alba. She then dies.

Endings

 * Bad Ending - Depending on the player's actions when facing Lloyd and Marta at the end of the game, Emil may or may not live. If the Bad Ending occurs, Marta will die, and when Emil's feelings come forth, he kills himself to revive her. He then transforms into an orb, possibly the Ratatosk Core. The orb is also shown along with the letter from Marta.


 * Normal Ending - Depending on the player's actions when facing Lloyd and Marta, and later Ratatosk, the Normal Ending will occur, where Emil refusion himself with Ratatosk. Ratatosk, realizing his past mistakes, tells the group to get out of Nifleheim, for him to be locked inside there. However, when Marta as the last to exit tells him that she loves him (referring to Emil), Ratatosk turns around, revealing Emil's greens eyes, and says that he (Emil) loves her, as well. The door is then locked.


 * Perfect Ending - Depending on the player's actions when facing Lloyd and Marta, and later Ratatosk, the Normal Ending will occur, but before the credits, Richter and Ratatosk will have a conversation where it seems like Richter switches place with Ratatosk, making the latter free to go back to the real world. After the credits, there will then be a cutscene where Emil appears before Marta, smiling. They then hug or possibly kiss.