|Parents|| Corneilus Rose (father)|
Marie Rose (mother)
|Siblings|| Jeremiah Rose|
Rianna Rose (b. 3034 - d. 3???) was a MechWarrior, born on the planet Northwind, She was also a certified assistant tech.  She was the younger sister of Jeremiah Rose and one of the founding members of the Black Thorns mercenary unit, where she served as the unit's executive officer.
Rianna Rose while being the executive officer of the Black Thorns also served as the communications specialist due to her mech’s advanced communications suite  During the contract on Borghese, she became infatuated with Hauptmann Salander Morgain who became a nemesis to the Black Thorns 
The Black Thorns took a contract to garrison Wolcott.  During this time they took on a supplemental contract to raid Courchevel . In the vicious and costly fighting against Clan Nova Cat, Rose was injured and her 'Mech was destroyed. .
After Clan Ghost Bear invaded the Draconis Combine in 3062, the Black Thorns were activated. They were sent to Jezersko to wage a guerrilla campaign against the Twenty-Ninth Provisional Garrison Cluster. Though they were mostly successful, a Ghost Bear trap critically wounded Rianna Rose and forced the Thorns to leave the system. 
- Main Event p. 47
- The Black Thorns, p. 11
- D.R.T. p. 188
- Main Event p. 226
- D.R.T. p. 44-45
- D.R.T. 111-114
- D.R.T. p. 276
- Mercenaries Supplemental, p. 20, "The Black Thorns: Rebuilding The Burnt Bridges"
- Main Event pp.47-50