In its over 100 episodes, Arrow has introduced a whole slew of characters to the DC Television Universe. And according to series star Stephen Amell, one of Arrow's earliest characters will be making a return appearance in the show's upcoming sixth season.

During a panel moderated by ComicBook.com's Brandon Davis at this weekend's Heroes and Villains Fan Fest Nashville, Amell was asked about Oliver Queen's living arrangements, which have essentially been up in the air for the past season-and-a-half.

"I will break the news." Amell revealed. "Oliver has an apartment this year, and we have somebody returning to the show this year that we have not seen since season one."

On its own, the news of a season one character returning would cast a wide net of options, but the fact that the announcement is tied to Oliver's apartment narrows it down.

The most likely option is Raisa (Kathleen Gati), the Queen family's maid who appears in Arrow's pilot. While Raisa has been mentioned several times over the show's subsequent seasons, she really only appears in that first episode.

Bringing her back into the fold would make sense, as Oliver will probably need an extra pair of hands to help with the increased presence of his son, William, in his life. Fans will just have to wait and see who this mystery character ends up being when Arrow's newest season debuts on a new night on Thursday, October 12th, at 9/8c on The CW.

You can find the description for the series below.

UP NEXT: Arrow Season 6 Begins Production

After a violent shipwreck, billionaire playboy Oliver Queen (Stephen Amell) was missing and presumed dead for five years before being discovered alive on a remote island in the North China Sea. He returned home to Star City, bent on righting the wrongs done by his family and fighting injustice. As the Green Arrow, he protects his city with the help of former soldier John Diggle (David Ramsey), computer-science expert Felicity Smoak (Emily Bett Rickards), his vigilante-trained sister Thea Queen (Willa Holland), Deputy Mayor Quentin Lance (Paul Blackthorne), brilliant inventor Curtis Holt (Echo Kellum), and his new recruits, street-savvy Rene Ramirez (Rick Gonzalez) and meta-human Dinah Drake (Juliana Harkavy).

Oliver has finally solidified and strengthened his crime-fighting team only to have it threatened when unexpected enemies from his past return to Star City, forcing Oliver to rethink his relationship with each member of his “family”.

Based on the characters from DC, ARROW is from Bonanza Productions Inc. in association with Berlanti Productions and Warner Bros. Television, with executive producers Greg Berlanti (“The Flash,” “Supergirl”), Marc Guggenheim (“DC’s Legends of Tomorrow,” “Eli Stone”), Wendy Mericle (“Desperate Housewives,” “Eli Stone”), Andrew Kreisberg (“The Flash,” “Eli Stone,” “Warehouse 13”) and Sarah Schechter (“The Flash,” “DC’s Legends of Tomorrow”).

Supergirl premieres on Monday, October 9th at 8 pm, while The Flash debuts on Tuesday, October 10 at 8 pm. Legends of Tomorrow moves to Tuesdays this Fall, airing right after The Flash on October 10. On Thursday, October 12 at 9 pm Arrow will premiere to round out the DC roster.

MORE ARROW: Season 6 Will See Major Change To Oliver / Katie Cassidy Posts Arrow Season 6 Behind The Scenes Photo / Stephen Amell Really Wants A Supernatural/Arrow Crossover