Richie Towell and Matt Thornhill have completed moves to Hibernian, following Martin Scott to Easter Road on Wednesday.
Scott signed a three-and-a-half-year contract to be reunited with his former Ross County manager Derek Adams, now assistant to Hibs boss Colin Calderwood.
Calderwood swiftly made his second and third signings, with Towell joining on loan from Celtic until the end of the season and Thornhill penning a deal until the end of the 2012/2013 season from Nottingham Forest.
All three players could be involved in Wednesday evening's Clydesdale Bank Premier League clash with Rangers, although Thornhill has been struggling with an ankle problem.
Republic of Ireland under-21 international full-back Towell has made one substitute appearance for Celtic this season and is pleased to switch to Easter Road.
Towell said on the club's official website, www.hibernianfc.co.uk: "It is a brilliant move for me and I'm delighted to come to a big club like Hibernian. Now I want to make an impact in the team and help Hibernian to climb up the table.
"It would be brilliant to be able to make my debut against Rangers - games don't get any bigger than that. Hopefully I can play some part in the game and help Hibernian win.
"The time with Hibernian will be massive for my development. I trained for the first time with the squad today and everything is really positive."
Calderwood was pleased to recruit Towell, who will provide much-needed defensive reinforcements and can also play in midfield.
Calderwood said: "Richie caught our attention when we played against Celtic in a bounce match. He will help to freshen up our squad and will be a good addition between now and the end of the season."