Disclaimer: Don't own the Phantom.
The Gauntlets pierced into his chest, and everything changed.
All the sorrow in Danny was consolidated, wrapped into Phantom's heart so tightly it would have bled ectoplasm by itself. All the sadness, all the tears, all the cries of anguish and loss were coalesced into Phantom's form, then Vlad ripped-
And then there was Fenton, and Phantom, and Phantom hung from Vlad's Gauntlet-encased hands, and the feeling of loss and turmoil tore through him like a gale, ripping his sanity to shreds without his human half to help ease the almost physical pain-
And glowing green eyes flashed open, teeth gritting as Phantom tore the clawed gauntlets out of his bleeding form, two holes gaping and oozing ectoplasm like a physical manifestation of his loss.
Vlad was tossed aside like a rag doll, and before he could move, the Gauntlets were on Phantom's hands in his chest, and there was a tear, and Vlad Masters and Vlad Plasmius slumped against opposite walls.
Power, the pure energy from Plasmius called like siren song to the bereaved now-full ghost, and he gave in, subconsciously overshadowing the vampiric ghost and absorbing, Vlad becoming Phantom and Phantom drinking in the energy-and the black ooze of the Wisconsin Ghost's evil- and it corrupted, filling into the empty holes where love for family and friends once shone, and Phantom screamed.
He screamed as the final wisps of his link to humanity evaporated, as his last connections to the living were overshadowed by a lust for power and destruction and mayhem, the need to burn and raze all to the ground until everything was gone- lost in oblivion like how his entire life had collapsed in shambles- as Vlad Plasmius was no more and in his place floated an evil even greater than any wild dream of his, dark as the deepest black holes in space, eyes garnet-red as the blood he would spill over the next ten years; a snake of a tongue whipped out to taste the fear stifling the air.
"D-Dan-" Masters croaked, only to be silenced with a quick blow to his temple.
Dan Phantom was born.