The Welsh international has been out of action with a back problem but returns to bolster the pack this weekend.
In addition to the inclusion of Coombs there is one other change to the starting XV as flanker James Benjamin is also included.
The back three remain unchanged as fullback Geraint Rhys Jones is joined by wings Tom Prydie and Hallam Amos. The centre pairing of Jack Dixon and Ashley Smith stays the same as well as half backs Dorian Jones and Jonathan Evans getting the nod.
The front row remains unchanged as props Boris Stankovich and Brok Harris join hooker and Captain T. Rhys Thomas. The second row has one change made to it as Andrew Coombs joins Cory Hill and the back row also sees one change as flanker James Benjamin joins James Thomas and Nick Crosswell.
The replacements bench has three personnel changes made to it as Phil Price, Scott Matthews and Carl Meyer join Rhys Buckley Lloyd Fairbrother, Matthew Screech, Luc Jones and Ashton Hewitt.
Dragons team to face Ulster
Geraint Rhys Jones, Tom Prydie, Jack Dixon, Ashley Smith, Hallam Amos, Dorian Jones, Jonathan Evans; Boris Stankovich, T. Rhys Thomas (c), Brok Harris, Andrew Coombs, Cory Hill, James Thomas, James Benjamin, Nick Crosswell.
Replacements: Rhys Buckley, Phil Price, Lloyd Fairbrother, Matthew Screech, Scott Matthews, Luc Jones, Carl Meyer, Ashton Hewitt.
Tickets are on sale for this Sundays encounter against Ulster, so make sure that you #PlayYourPart and get behind the Dragons. Call the ticket office to buy your tickets on 01633 674990 or go to www.newportgwentdragons.com/tickets
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