Vittel (ヴィッテル, Vitteru) was a part of the Assassin's Guild Sham Lash from the Parthevia Empire before his defection to join Sinbad as one of the founders of Sindria Trading Company and eventually the nation of Sindria.
As a former assassin of Sham Lash, he was a ruthless person.  He's very loyal as demonstrated when Ja'far accepted Sinbad's invitation to defect, he and Mahad decide to join as they were together with Ja'far.  Being a merchant in Sinbad's company, he's a hard working man. 
Vittel grew up with Mahad in Partevia as war orphans. Eventually, both had to steal for their survival, which led to them being picked up by the organization.
Vittel has the ability to stretch his arms to outrageous lengths.
- His name may refer to "Vittel", a commune in the Vosges department in Lorraine in northeastern France and also the name of "Vittel brand", a French brand of bottled water.