|SaGa Scarlet Grace: Ambitions character|
|Appearances'||SaGa Scarlet Grace|
|Voice Actor||Joe Kruse|
Immediate Response: Initial act order up small, concentration up.
Automatically joins at the beginning of Balmant's scenario.
| Urpina's Story|
| Leonard's Story|
| Taria's Story|
| Balmaint's Story|
|All Stories||After Arthur abandoned the group from Castle Kohan, Isaac was finally able to enjoy the sweet, sweet taste of liberty. Without Arthur around, he eventually came into his own as the ruler of Castle Kohan's seedy underbelly.|
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