He is the son of Olivia, and a character from the future. In Awakening, he can be the brother of Lucina or Morgan, depending on if Olivia marries Chrom or the Male Avatar. In addition, he can also be the father of Morgan if the Female Avatar marries him.In Fates, he is the father of Soleil. He can also be the father of the Male Kana or Shigure, by achieving a S-Support with the Female Avatar or Azura (respectively).

Some time after the events of Awakening, Inigo appears in the world of Fates, alongside Severa and Owain, and takes on the alias "Laslow". His supports with other characters (apart from Severa and Owain) show that the three of them are here for an unknown reason. Laslow becomes a subordinate of Xander, though his birthplace and personal history are unknown to the people of Nohr. He is good at dancing and can use it as a special command. If he achieves an S-Support, he will have a daughter named Soleil.In his support conversations with Xander, Laslow once sparred with him under Garon's orders, Xander was impressed by his foreign skill, leading him to gain Xander's trust and proceed to make Laslow his retainer.

In Fates, despite still being a flirt and very shy, he is more sensitive to other people's needs and emotions. Often times he uses flirting as a pretense to build stronger bonds between him and his comrades, rather than just shallowly chasing skirts. He is also considerably more mature and wiser, often giving advice to those in need. Most of his supports show a surprisingly sad and introspective side to him, likely due to homesickness. After becoming a father to Soleil, Inigo begins to understand why his parents protected him with their lives, much like how he wants to protect his own daughter. He is exceptionally loyal to Xander, demonstrated by his declaration that protecting Xander came first, and then Nohr after.In both Awakening and Fates, he is the biggest night owl out of everyone in the army. His birthday is August 7.

Voice Sample: https://www.youtube.com/watch?v=jlIs6KC3MNM