Timothy "Jace" Fox is the formerly estranged son of Lucius Fox.
Featured in these Comics
History
JOKER WAR
After the Fox family acquired the Wayne Family fortune, Tanya urged Lucius to call Timothy home.
SECOND SON
With the assistance of Vol, Tim Fox attempted a mission in Vietnam to take down billionaire Tyler Arkadine. After the mission went awry, Tim returned home only to find Grifter, there to return Tim to Gotham on Lucius Fox's behalf.
He seemingly reconnected with his family, returning to Gotham City.