Lucy Heartfilia, one of the characters of the series, is named after one of The Beatles songs "Lucy in the Sky with Diamonds".
Todd Haberkorn, Natsu Dragneel's English voice actor, has a guild mark tattoo on his right arm just as his character does.
The shopkeeper in the first episode is also the black market magic dealer in the Edolas arc.
Natsu Dragneel was originally going to be a celestial spirit with horns.