Karissa Greatjohn is a human female, born in the 19th year of King Damian's reign. She is the younger sister of adventurer Karstone Greatjohn, both of whom are children of John 'The Greatjohn' Rogers. Little is known about Karissa, for she died at the age of twenty-one, nearly three decades ago, in a short space of time after her own father's demise. Most of the people who knew her have now long forgotten her.

It is hypothesised that Karrissa Greatjohn might be the 'love' depicted in The Greater Beast.

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