The title is based upon a quote from William Shakespeare's play "King Lear" (Act I, Scene IV): "How sharper than a serpent's tooth it is to have a thankless child!"
Dean O'Gorman (Iolaus) & Joel Tobeck (Strife / Nysus Gaius) also worked together on Westside (2015) as Evan Lace & Des McEwen respectively.