Efron is the Keeper of the Bane pack and Logan Bane's father. He is known for his cruelty and lascivious behavior toward female Guardians. He is ironically killed by Sabine at the final showdown in Rowan Estate.
Efron was originally a "rakish" gambler from some other country who came to the American West due to the Colorado gold rush. After meeting Marise Bane, he went from shiftless wanderer of the frontier to the husband of one of the most powerful Keepers alive in the nineteenth century.
Calla calls him a "lecher", which is a fitting word to describe him. He was originally attracted to Cosette, but Sabine took pity on her because she was young and terrified of Efron, so she took Cosette's place. Like his son, he is very cold-hearted and takes advantage of Sabine inability to disobey him to use her.
He is said to have pale skin and golden-blonde hair. It is unclear what color his eyes are, but it is said that they mirrored the color of flames.
His wife is Bosque Mar's granddaughter Marise, who died giving birth to his son and elevated him to her status, and his son is Logan Bane.
"Come now, children. We're all here to have a good time, aren't we?"
"It's good to see you, Renier. And the lovely Calla. We meet at last."
"We've been expecting you."
"That is something we'd all like to know."
"You will never leave me and live."
"Let's try that again, but make it sporting, shall we? Emile! Sabine!"
"I think we'll be the ones asking the questions, friend."
"That is not your concern."
"Whosoever objects to this union, speak now or forever hold your peace."
"Welcome home, my dear."
"Dear Sabine, why would I open my arms to you? Betrayal cuts like the sharpest knife. Surely you know that."
"How dare you lay a hand on my son!"
"Now, now. We don't have time to let you boys tussle."
"You have our thanks, young alphas."
"We'll bid you good night, then."