Actors Dylan Schmid and Dean Petriw, who play the younger brothers (Holden and Luke) in the series, both played a younger version of Baelfire (Rumpelstiltskin's son) from Once Upon A Time.
Burkely and Dilan (Holden and Willa) who play a couple on the show are dating in real life.
While Holden is older than Luke, the ages of the actors differ. Burkely Duffield who plays Holden was born on 9 August 1992, while Jonathan Whitesell is older having been born a year earlier on 28 August 1991.
Burkely Duffield was in the television series House of Anubis (2011), where his character also had special abilities and was part of an Egyptian conspiracy. He was called the Osirian.
Actor Burkely Duffield and his character Holden Matthews were born in the same year (1992). Burkely's birthday is August 9 and Holden's is February 17.