Welcome to the boards, Sir Osis.
Sir Osis, on Nov 16 2004, 01:31 PM, said:
I was wondering if there is a way to create allies in it.
In a word, no. You could, however, create a massive animation which would look like NPCs fighting each other but it would have to be totally scripted.
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Characters having the ability to summon monsters to fight for them.
Yes, this can be done but they will fight against the player, not the player's foes. It would be done through an event which exchanges passive NPCs for hostile NPCs (or just makes hostile NPCs appear) when the right moment occurs. The character who does the summoning can either join in the fight or remain uninvolved as you see fit.