[edit: posted response to wrong thread

]
Since i'm here, if you want to do that you would need to:
- Find the ActorSnoId of the boss you want to avoid. You can get this by using the 'Dump Objects' button in the 'Info Dumping' tab.
- Add some logic to check for the Id. Maybe.Combat\HandleTarget.cs HandleTarget() ~175
Code:
if (CurrentTarget.ActorSNO == 000000)
{
TrinityPlugin.LeaveGame("I dont like this boss.");
}
or if you are on an older version:
Code:
if (CurrentTarget.ActorSNO == 000000)
{
Logger.Log("I don't like this boss);
GameEvents.FireWorldTransferStart();
ZetaDia.Service.Party.LeaveGame();
BotMain.PauseWhile(() => ZetaDia.IsInGame);
}