Barnet manager Paul Fairclough has signed defenders Stevland Angus, Kenny Gillet and Joe O'Cearuill.
Angus spent last season with Torquay in League Two
Angus, 26, who was a free agent after leaving Torquay in the summer, made his debut in Saturday's 2-1 loss at Brentford and was sent off.
O'Cearuill, 20, has left Arsenal to join the Underhill outfit.
Gillet, 22, impressed during his trial spell with the Bees but turned down the club's initial contract offer. He has experience with French side Caen.