Temporary actor, special combat conditions.

Hello there!
I have a few questions about adding a new actor to a party. The player, who plays with the main hero, will meet at some point a new ally, with some specific skills and characteristics that cannot be modified. So here are my questions:
-1) Is it possible to have the new actor displaying his equipment, without allowing the player to unequip it?
-2) As the main hero is important, he needs to stay alive at all times. The player may get a "game over" if his hero gets KOed even if his ally is still standing. How can I do that?
-3) On the other side, if the new ally is down, he needs to be revived with 1HP at the end of each fight.

I'm ready to set up any plugins if needed. If you have the answer to even one or two questions, feel free to reply, it is always much appreciated, thanks!

1) use the fix equip trait
2) troop events
3) depends on how your battles are started, with evented battles just add commands after the battleprocessing.
With random battles you'll need a Kombination of troop event and common event.

Whoa, thanks Andar, efficient as always. Figured out the 1) shortly after sending the post. Should have thought about it further. Thanks for your help!

if it is going to be a key feature of the game, don't use troop events, instead hard-code the effect into the files with a plugin.
there are functions dedicated to handling pre- and post-battle procedures, per actor and for the whole party.
write it down once, and set it for the whole thing.