Hello!

(SPOILERS)

Happy international troll day. What are some instances that let you troll AI controlled characters? Real human don't count.

Baldur’s Gate 1: Second floor of the magic shop in the city of Baldur’s Gate. The wizard Niemain will tell you to scram. You can give him some BS about how you are allowed to be there. Hilarity ensues.

Baldur’s Gate 1: When you get to the Iron Throne tower, people will ask for help and you can give them bogus directions.

Arkham City: At the end of the game you’ll see Harley Quinn tied up with duct tape over her mouth. You can repeatedly remove and re-apply the tape. She will express her annoyance at this.

Arkham Knight: You can rig a crate of weapons to electrocute anyone who touches it. Combine this with the voice synthesiser for maximum effect.

Akrham Knight: There’s a type of enemy who can locate your location when you turn on detective vision. Take out everyone in the map except him. Stand right behind him and turn on your detective vision. He has unique dialogue for this exact situation.

Oblivion: You can reverse pickpocket poison food. They will die shortly after.

Edit: thanks for the replies! ♥

In Front Mission 3, one stage has you try to block off and defeat the boss before it gets to a certain 2 square area on the map (because they're trying to kill someone there). I was down to my last mech, and both its arms were damaged so that it couldn't attack so I thought I didn't have a chance.

So I parked the mech in one of the squares, then ejected the pilot in the other and tried to attack the boss with his pistol (which has low accuracy and only does 15 damage if it does hit and you're pretty much dead if you get counterattacked).

The boss doesn't actually try to attack or even counterattack, since his top priority is to get to the targeted area. And since both squares were blocked off he just stood there. So I was able to chip him to death after 100+ turns with just the pistol.

In Shattered Steel, you can use explosive weapons to dig out terrain. I used all my mortar ammo in the last mission to make a sort of a mammoth trap in front of the gate the final huge boss comes out of. The moment he appeared, he instantly fell down the hole and was unable to get out. The boss is pretty BS on the harder difficulties so using this method felt great.

In Nox, when you are in the city of fighters, there are a ton of friendly (when playing as a fighter) NPCs in full plate armor which is quite expensive to sell. You can't attack them, but you can "stage accidents". Slowly push them into the lava, they will just stand there, melt and die and you can collect everything that drops from them. You have to be quick though, because the lava melts the gear pretty fast. Costs you some HP, but very well worth it :D Also makes for great loot explosions. Knew about all the listed Batman things, but not this one. Will definitely try that if I ever replay the game.

In Final Fantasy 9 when you use flute to summon save moogle, don't save and send him away. Keep doing it. Eventually he get pissed off at you/the useless running back and forth on the world map. Ultimately, nothing happens too bad. :)

You can do something similar in Metal Gear Solid to wind Mei Ling up.

I believe that in Pathfinder: Wrath of the Righteous, there's some trolling you can do if you take the Trickster path.

In Final Fantasy 5, there are some cases where you can get the enemy AI to do strange things. For example:
* One boss will use earthquake attacks against you. If you put float on one of your characters, the boss will instead try to dispel it with Gravity 100. That spell is reflectable, so by casting Float before hand and equipping a reflect ring on the character, you can get the enemy to keep trying Gravity 100 to no avail.
* Another boss uses blue magic against you, and will learn blue magic that you use against him (if he doesn't already know it). For example, if you cast Self-Destruct, he will learn that spell and use it against you. If the boss is somehow still alive after that (for example, if you took away all of its MP), he will keep trying to cast that spell until he dies (or you cast that one spell that restarts the battle, or your party somehow wipes).
* One early boss, while dangerous physically, is not immune to Toad, which will make that boss's attacks harmless. However, the developers thought about that, and gave this boss the ability to cast Toad on itself, in order to remove the effect. This boss is not immune to silence, and you have access to that spell at this point.
* However, be aware that the game can troll you. There's a treasure chest with a superboss in it that will open the battle with a tidal wave doing 7000+ damage to the entire party, at a point when characters in high HP jobs only have HP in the 3000s. This will wipe out a party that isn't prepared for this.
* Oh, I just remembered an instance of the game trolling you. At a point in the game when your party's average level is around 15, the game introduces an enemy that can cast the spell Level 5 Death, which instantly kills those whose levels are multiples of 5. If your entire party is level 15, that's a party wipe. (FF6 does this as well, except that this happens when your party is around level 20.)

Some versions of Final Fantasy 4 allow you to enter the developer's room and fight some of the developers. Some of these fights are really strange, including the only time I've found the poison status ailment useful in that game. Then again, FF4 has a late-game enemy that trolls you by revealing its weakness, but if you exploit it, the enemy will Thundaga you to death. (Then again, that reminds me of FF9's Grand Dragons; they appear early in the game, are level 60, and can Thundaga your party for 2000+ damage, at a point in the game when you still only have 3 digit HP.)

That's some top notch cheesing.

2064: Read Only Memories -- There are several opportunities to be obnoxious towards NPCs. Near the end of the game, you can even ruin your sidekick's plan at the last minute.

Persona 3 -- Some party members will make uncomfortable reactions if you make them wear certain outfits.

I believe there are some games where NPCs will react differently if you remove all of your armor and clothes before talking to them.

In fact, I remember hearing about at least one game where doing this allows you to prevent the NPC from going hostile when you talk to them, as the hostile trigger is overwritten by the naked trigger.

I think that might be Morrowind.