How much Magic Resistance does he have, because I am going to buy as much lower magic resistance scrolls I need, also, do Greater Malisons Stack? Does Doom Stack? Do spooks stack? Does Insect plague have saving throws or magic resistance applied to it? What items does kangaxx have in case I try to polymorph him? Is he resistant to the ADHW? Can he resist int drains? Also would the cloak of mirroring reflect back imprisonment?

Just asking, If you want to know why I asked the majority of the questions, its because I want to see if I can petrify/kill Kangaax with Chromatic orb.

Sorry to burst your bubble, but Kangaxx is immune to 1st level spells, in fact he's immune to all spells up to and including level 9.

<font color=white> Hmmm... normal liches are immume to level 1 - 5 spells, demi-liches however are immume to level 1 - 9 spells...

However, he is not immume to Intel. Drain (caused by Mind Flayers/Illithids, level 9 spell: Shapechange)

Nothing will reflect the Imprisonment effects, you can only prevent it from happing to you, with the spell Spell Immunity: abjuration. There are several other spells that will prevent Imprisonment effects, though Kangaxx spit's them out like he's a machine gun... so those other spells wouldn't be a great tactic vs him.

Check: The Kangaxx Battle Guide for other tactics/help. </font>

blast.

cept you need +4 weapons to hit him and i'm not sure what the flayers count as but i'm sure it's not +4(i think its +1)

So if imprisoned, a freedom scroll or dispel magic would be good enough to free the imprisoned?

Only Freedom.