Poison Oak

Bruce crashed to the ground, the encasement of sap shattering as the colossal flower spat him out.

"Lover, lover?" Ivy shook him awake. The green-skinned woman smiled to see him regain consciousness.

"Good, it looks like the transformation was a success." Ivy remarked. Bruce wasn't the only thing transformed. The Batcave had become engulfed by plant life, moss, grass, flowers hanging from every surface. Vines were tangled around the batcomputer, the machine unusable now.

Ivy took him to a mirror and let him inspect his new form.

Bruce's skin had taken on a colour as unnatural as Ivy's. Only where as his partner was green, Bruce was now a stern, imposing gray. His eyes had been transformed from their icy blue to the same chlorophyll-enhanced violent green as Ivy's. His body, already peak human, was powerful in ways no mortal man could be. His cock had been enchanced from it's average six inches, it was now much thicker and twice as long.

Ivy waved a hand, and a patch of green leaves, similar to the kind that (usually) preserved Ivy's modesty, bloomed into being on his skin, in the shape of the trunks on his old Batsuit.

"So different... I can't be Bruce Wayne after this..." he noted, rubbing his powerful, granite-like chin.

"My thoughts exactly, lover." Ivy grinned. "Batman's retired, Bruce Wayne is gone. Now you'll take up a new mantle... Poison Oak."

Bruce accepted it, renouncing his human name and thinking of himself as Poison Oak, just as Pamela Isley had once done with her alter ego.

"Come." Ivy beckoned, leading Poison Oak away from the mirror.

On the table where he had once tweaked gadgets in his previous life, was a set of rustic looking armor. Poison Oak lifted it, inspecting each piece in turn.

"One of my babies sacrificed his bark, that you might wear his skin into battle, Oak." Ivy informed him. It was wooden armor, a chestplate, greaves, boots, gauntlets, even a natural-hewn wooden helmet to replace his cowl.

"The Dark Knight is gone, but Gotham will still have a Knight. Only now, he's one of wood and vine, grass and venom. A Forest Knight." Ivy pronounced.

"I accept this gift." Oak said respectfully. The armor seemed taylor made for his new body, slotting into place and covering him perfectly.

"Now, love." Ivy said, reaching up to kiss his exposed mouth. "What shall we explore first, your newfound powers, or this new body?!"