If you have no weapon equipped and if you have one use of a healing item left, using that last healing item will cause an uncommon glitch to occur where the weapon listed first in your status menu will be automatically equipped. This glitch also appears in Fire Emblem: Radiant Dawn.

The Ancient Tongue which the Laguz characters speak is actually just a heavily stylized English font. The pieces of Ancient Tongue that appear on the game's menus can be translated, and when placed in order, form a quote from Shakespeare's Hamlet, specifically a love poem that Hamlet sends to Ophelia: "Doubt that the Stars are fire / Doubt that the Sun does not move / Doubt truth to be a liar, / But never doubt I love." The quote has no relevance to the game's plot, but is a neat reference to a famous line.

In the game's data are unused graphics of weapons and icons. These are all from the series's fifth entry, Fire Emblem: Thracia 776. The reason these are in the data is unknown, as they are never used in the game and would have no reason to be used.

In the beta version of Fire Emblem: Path of Radiance, Ike was known as Paris. Priam, a character from Fire Emblem: Awakening, claims to be a descendant of Ike and his Japanese name is Paris.