After Adam was killed by Blake & Yang, fell down a cliff and into the waterfall where his body is now floating down into, he now sees himself in a dark, empty void

Adam: what? What is this place? Am I dead?

???: Adam.

Adam heard that menacing voice and went into a battle stance and was about to pull out his sword, but he sees that it's gone and remembered that it broke apart during his fight with Blake & Yang

???: There is no need to be afraid, Adam Taurus.

Adam: (stern tone) Who are you!? Where are you!?

Then a fire wall appeared in front of Adam as he sees something walking through the fire and as Adam looked closely into it, his eyes (Both scarred & not) widened at seeing that the thing walking through the fire is actually a Black Cybetronian with flames spewing out from his mouth plate & other certain parts of his body

YES, I am talking about Megatronus Prime. (aka: The Fallen)

(mainly The Fallen from the Comic Books)

Adam: (in fear) what are you?

The Fallen: I am Megatronus, and I have been watching you for a long time, Adam Taurus.

Then the First Decepticon created a projection in front of Adam, playing back memories of all the things he's done back on Remnant, such as the SDC train raid, The Fall of Beacon, him killing Sienna Khan, the attack on Haven Academy and lastly, his own death

Adam, after seeing his own death from the projection, made him ball up his fists and growl in anger

Adam: why those arrogant, ungrateful-

The Fallen: Be calm, Adam. I know you're angry at seeing your own death by the blonde human girl and the one you once considered a lover, but your new life is about to begin.

Adam looked at The Fallen as he raised an eyebrow

Adam: what do you mean?

The Fallen: I'm offering you a chance to be reborn as a member of a race of autonomous mechanical beings known as ''Cybertronians''.

Adam scoffed at hearing The Fallen's offer and glared at him

Adam: Why should I even be reborn as a robot like you?!

The Fallen glared at Adam as the flames spewing out from his body started to get bigger and more hot

The Fallen: Because you were betrayed by your own kind, your former lover, you were even tormented by the humans who branded your left eye when you were young and once a slave to them!!!

Adam then widened his eyes in realizing that The Fallen is right about those things as he touched the SDC mark on his left eye

The Fallen: you were the only one among the rest who had the courage to do what needed to be done!!!

The flames from his body then erupted a little bit as he leaned close to Adam's face, but kept a distance to not burn him despite the Bull Faunus already being dead

The Fallen: despite having your whole world against you, YOU are exactly what I wished for.

Then he let his left hand out to Adam and smirked under his mouth-plate

The Fallen: now then, do you accept the chance to be reborn?

Adam started to think about it even more after hearing everything The Fallen has said to him and knew that it was all true, so he stared at The First Decepticon and nodded at him, then he grabbed his gigantic hand and next, everything went dark in Adam's eyes

.

.

.

Now, Adam Taurus... has been reborn