The adorable Fergus will be officially a grown-up in the third season of "Outlander."

Entertainment Weekly revealed that the 26-year-old "The Walk" actor César Domboy had been tapped to play the role of Jamie (Sam Heughan) and Claire's (Caitriona Balfe) young companion in "Outlander" season 3.

According to the official description from Starz that was posted by the publication, the young orphan that was born from a French brothel has finally grown up to become a charming and handsome man. He reportedly grew up with an exceptional sense of loyalty, even if he was raised in an unusual setting.

The grown-up Fergus is also said to be "the ultimate romantic, wearing his heart on his sleeve and falling in and out of love easily." He will also show his complete devotion to Jamie, and will prove himself to be an important part of the Fraser clan. "Still, his debonair demeanor masks a longing for a lasting love and a permanent sense of belonging," the description added.

Domboy was also featured in the second season of "The Borgias" before he landed the coveted role of the adult Fergus for "Outlander" season 3. He will replace Romann Berrux who appeared as the young version of the character in season 2.

Aside from Domboy, several actors were added to the growing cast of "Outlander" season 3. The list includes "Waking the Dead" actor Wil Johnson as Claire's medical colleague, Joe Abernathy, "The Hobbit: The Battle of the Five Armies" star John Bell as the grown-up version of Jamie's nephew, Ian Murray, as well as David Berry, who landed the role of the adult Lord John Grey.

Starz also released the first look for "Outlander" season 3, showing that the epic Battle of Culloden will be immediately featured in the premiere episode of the season.

The promotional image showed Jamie and his mortal nemesis, Black Jack Randall (Tobias Menzies), caught in a sword fight during the bloody battle.

The network has yet to announce the official release date of "Outlander" season 3.