Spider Monkey AU
Where Fang is basically turned into a Spider version of one of the Spider Queen's minions.
Summary
Upon returning prior to her father's request in order to finish training MK, Fang's identity is blown, and after a while she's caught by the Spider Queen. Where she's subjected to the same serum as the city was during her takeover, and is turned into a minion of SQ.
After Shadow Play, Macaque is put in an arena where he's pitted against Fang. He ends up teleporting them both away. Decidedly using her to throw SQ off his trail should they decide to follow. It works, but she's left in a frazzled state and wanders the city. Where she eventually gets chased down by the Huntsman, only for Red Son to notice and take chase. And in the end save her. Where she's brought back to his hideout and given treatment for her condition. It isn't much, but it's enough to temporarily disable her hostility long enough for her to warn Red Son of LBD going after MK. To which he makes it his sole duty to track them down in order to stop LBD while also dishing out a swift revenge on Fang's behalf.
Unfortunately for him, they are unable to make it to them in time, and are eventually forced to evacuate the city back to their families domain with Fang in tow.
Red Son eventually crosses path's with the gang, and after a brief back and forth, allows them to see Fang. (As per her request to be put under to avoid further conflict in her possessed state.) Waking back up, she warns her father of LBD going after the Jade Palace in the celestial heavens, wanting to unleash pure chaos onto the world. And with what power she has now, she has that choice. She claims that while she was under she was traversing the spirit world, in hopes of keeping herself sane while also keeping an eye on LBD and her plans. Now knowing what she know's, she plans on visiting the Jade Palace herself and warning them of the oncoming danger. After briefly offering her his own plan, and a tear felt goodbye, MKing finally lets her go. And makes it his mission in attaining the weapon that will vanquish LBD.
(In a connection to the Reincarnation AU, the crew manages to find the Samadhi's Fire, and uses it to fight back against LBD. Fang manages to bring reinforcements with the Celestial Armies, however during a tedious standoff where LBD attempts to overthrow the army and the crew, LBD escapes her mount in an attempt to avoid the flames. Fang, seeing this, steals Lao Tzu's diamond snare and proceeds to use it to hold her back while the others work. Unfortunately the fires grow uncontrollable and scorch the earth and heavens, with Fang caught in the crossfires where she subsequentially 'perishes')