Over the course of five seasons, "Arrow" has seen major characters travel across the globe and weave in and out of the narrative. However, executive producer Marc Guggenheim revealed to Entertainment Weekly that there are some places Team Arrow will never go.

"There's two lines in the sand that I’ve drawn for "Arrow" for myself," he explained. "I can't speak for Greg [Berlanti] or for Wendy [Mericle], but for as long as I'm involved with the show, the two things I never want to do is kill off Thea [Willa Holland] and put Felicity in a mask and a costume. Those, to me, are two lines that I just think are a bridge too far. Thea, because we've taken so many family members away from Oliver, and Felicity because when you put a character like that in a costume, I think it diminishes who that character is and it makes the idea of superheroics seem silly."

RELATED: Arrow: Felicity Will Soon Meet The Mysterious Leader of Helix

"Doomworld," this week's "Legends of Tomorrow," saw an alternate reality version of Felicity Smoak donning a superhero mask of her own. Nevertheless, Guggenheim reiterated multiple times that he has no intention to ever put Felicity in mask and costume on "Arrow."

"Arrow" airs Wednesdays at 8 p.m. ET/PT on The CW. The show stars Stephen Amell as the Green Arrow, Emily Bett Rickards as Felicity Smoak, David Ramsey as John Diggle, Willa Holland as Thea Queen, Paul Blackthorne as Quentin Lance, and Echo Kellum as Curtis Holt.