Edwin had a disdainful, conceited personality. He believed himself to be an exceptional genius, while his behavior demonstrated that he was often less than wise. He was self-centered to the point of megalomania and constantly refers to other people as "monkeys" or by some near-synonym. His insults often occurred when speaking to himself about others, seemingly unaware that they could hear his commentary.
After his journeys in the region between the Sword Coast and Amn, Edwin ventured with several other Red Wizards a bit further north along the Sword Coast. During their travels, the mages were stopped by the crusading army of the Shining Lady, Caelar Argent. Two of his companions, one of whom was named Vichand, joined the crusade while the third was killed. Edwin managed to escape the encounter and swore revenge on the Shining Lady and her army.
Sometime after the betrayal of his compatriots, in the Year of the Gauntlet, 1369 DR, Edwin had a complete falling out with the Red Wizards of Thay and traveled south. He settled in Athkatla, the capital city of Amn under the rule of the Cowled Wizards, a dangerous home to be for an arcane spellcaster. Edwin joined with the Shadow Thieves, under Mae'Var, a leader of one of the smaller guildhalls. During this time Edwin sought out one of the lost Nether Scrolls, an ancient artifact of immense arcane power, which he believed to rest in the dungeons deep beneath a tomb in the city's graveyard district.
- In Baldur's Gate II: Shadows of Amn Edwin could change from male to female.
- BioWare (December 1998). Designed by James Ohlen. Baldur's Gate. Black Isle Studios.
- BioWare (September 2000). Designed by James Ohlen, Kevin Martens. Baldur's Gate II: Shadows of Amn. Black Isle Studios.
- Beamdog (March 2016). Designed by Philip Daigle, et al. Baldur's Gate: Siege of Dragonspear. Beamdog.
Ajantis Ilvastarr • Alora • Baeloth Barrityl • Branwen • Coran • Dorn Il-Khan • Dynaheir • Edwin Odesseiron • Eldoth Kron • Faldorn • Garrick • Imoen • Jaheira • Kagain • Khalid • Kivan • Minsc • Montaron • Neera • Quayle • Rasaad yn Bashir • Safana • Shar-Teel Dosan • Skie Silvershield • Tiax • Viconia DeVir • Xan • Xzar • Yeslick Orothiar
Siege of Dragonspear
Baeloth Barrityl • Dorn Il-Khan • Dynaheir • Edwin Odesseiron • Glint Gardnersonson • Jaheira • Khalid • M'Khiin Grubdoubler • Minsc • Neera • Rasaad yn Bashir • Safana • Schael Corwin • Viconia • Voghiln
Aerie • Anomen Delryn • Cernd • Dorn Il-Khan • Edwin Odesseiron • Haer'Dalis • Hexxat (Clara) • Imoen • Jaheira • Jan Jansen • Keldorn Firecam • Korgan Bloodaxe • Mazzy Fentan • Minsc • Nalia de'Arnise • Neera • Rasaad yn Bashir • Valygar Corthala • Viconia DeVir • Wilson • Yoshimo