|Full Name||Ralph Ostrowski|
|Main Affiliations||Maude Eccles|
|Voiced by||Not credited|
Ralph Ostrowski is, in 2013, a criminal hiding in the Davis Quartz quarry while out on bond and attempting to evade capture from Maude Eccles, his bail bonds woman. He had evaded capture, being described by Maude as a 'slippery character'. Trevor, working for Maude, apprehends Ostrowski, who attempts to escape in a vehicle, before returning him to Maude.
- GTA V
- Bail Bonds - Ralph Ostrowski (can be killed)
- Ralph Ostrowski can be killed during the mission.