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- friend (rivalry other than friendly is kept secret) is a friendly rival because of a perceived an insult
- former friend is a fierce (openly an enemy) rival because of disliking the character's looks
- professional rival is a jealous (may seem friendly) rival because of parents being rivals
- unusual people (gypsies, pilgrims, etc.) is a obsessive (focuses entire life on rivalry) rival because of parents being rivals
- a relative (second cousin), whose goal is to right some imagined wrong,
and whose alignment is diabolical.
The villain's scope is local is a jealous (may seem friendly) rival because of parents being rivals