So most of the angst in this AU comes in after Tim is supposedly cured. Things seems fine for a few weeks, in fact Tim’s feeling better than ever, but he starts to notice that the lingering effects of the Manbat serum are not going away.
Bright lights still bother him and his hearing is still way too sensitive. He tries to stave off his numerous headaches with pills, but nothing works, and when he snaps at Jason one night his voice morphs into an inhuman shriek.
After an awkward moment, Tim and Jason agree it’s time for a checkup.
After testing for an hour, they find out what the problem is. It turns out the Manbat formula re-grew Tim’s missing spleen. Unfortunately Tim’s new spleen also infected the rest of his body with mutated bat genes.
So now if Tim becomes too frightened or is hurt too much, he will transform back into a Manbat.
