Gaspar was an alchemist along with Farid who were in Flotsam around 1271 when Geralt was in the area. If talked to, the two alchemists request the witcher to test a potion for them before walking away.
- The witcher ran into Gaspar once more in unexpected circumstances. The alchemist was part of an expedition that was to scour the caverns beneath Loc Muinne in search of the laboratory of the famous mage Dearhenna.
- The expedition ended tragically for Gaspar. He died in a trap set by the malicious Dearhenna.
- If the player imports a saved file into The Witcher 3: Wild Hunt in which they drank the potion in the second game, they can later find find a letter from Farid to Gaspar about the experiment.