Despite Ignatius' rough looking exterior, he is extremely timid and very kindhearted, much like his father. However, when time is needed, Ignatius is perfectly capable of displaying strong valor and courage to protect the weak, even if the enemy is clearly stronger than he is. He is fond of cute things. Ignatius idolizes his father, wanting to become a hero like him and displaying the same strength he does. He carries a charm made by his father for protection and strength and is his most treasured belonging. During their support conversations, Ignatius and Benny have an awkward time communicating.

Ignatius has a wide variety of fears, most notably bugs. He is so afraid of them, that he cannot even approach one and has his mother take care of it in his stead in their supports and even his father uses it as a test of his courage in their support. He is also terrified of ghosts and clowns, as revealed in his supports with Selkie.