Defenders Danny Griffin and Gary MacKenzie have become Alex Rae's first signings as Dundee manager after agreeing two-year contracts.
Dundee's new additions paraded their new strip
The 28-year-old Griffin, formerly of Dundee United, was with Aberdeen for the second half of the season after an injury-hit spell with Stockport County.
MacKenzie, 20, has come through the youth system at Rangers.
A delighted Rae told BBC Sport: "He's a winner and was desperate for a crack at first-team football."
MacKenzie, a Scotland Under-19 international, impressed Rae during his two seasons with the Scottish Premier League club.
And the manager predicted that MacKenzie would "terrify" a few strikers in his time at Dens Park.
What injury problems? I've been fully fit since October last year and it's not an issue
MacKenzie said: "I'm a physical defender and it's my job to stop strikers scoring.
"I'm looking forward to playing alongside Bobby Mann. His experience will help me and I think we can complement each other's style of play."
"I know Dundee are a big club and I want to play in the Premier League for them."
Griffin, previously with St Johnstone and Dundee United, was hampered by injuries during his time with Stockport.
He snapped his Achilles in March 2004 and had a number of other niggling problems - playing only 41 games for Stockport.
But the Northern Ireland international was free of injury during his stay at Pittodrie and said: "I've been fully fit since October last year and it's not an issue.
"What happened with Aberdeen at the end of last season was a disappointment because I thought I had done enough to get a new contract, but that is the nature of football sometimes."
He also did not expect many problems with Dundee fans despite being a former United player.
Meanwhile, Rae also hopes to add an experienced goalkeeper shortly.
Derek Soutar is heading for Aberdeen, while Trinidad & Tobago international Kelvin Jack is a free agent, leaving teenager Scott Murray as Dundee's only goalkeeper.
Rae is also hoping to sign another couple of outfield players in the next few weeks.
He has also been linked with a move for striker Derek Young, who was not offered a new deal by Dunfermline.
Former Morton winger Andy McLaren is another possible signing.