He is a Jedi, and his name is Tale Kalb. His robes were trailing behind him as he charges, lightsaber at hand, toward a battalion of the 501st. The troopers of the 501st were Darth Vader's personal battalion and they were his most trusted men. The clones had overrun the Jedi temple and it lay in ruins. He knew it was a lost battle, but even as the other Jedi fled, Tale Kalb rushed toward the clones, blaster fire passing him. Although he is strong in the Force, the Jedi didn't expect Tale Kalb to resist the Dark Side for so long, as he always rushed his exercises as a child and never respected his trainers. He had always wanted to be the best in his class. Everyday he iss tempted by it, but the lure of the Dark Side grows harder to resist with each passing moment.
A green wave flashed for an instant, and Tale Kalb hit a clone in the chest. He spins around and severs another's head. He is fighting brilliantly; but a clone shoots him from behind with his blaster rifle. He collapses. The clones pick him up and bring him to Lord Vader. Only the blasted ruins were left behind. The once proud Jedi temple is now only a smoking pile of rubble. All ancient texts have been burned, and hundreds of Jedi lie on the ground, killed by the once loyal men of the 501st.
Tale Kalb wakes up in a medical chamber, with Darth Vader's horrifying mask staring down at him. "Hoooo…Kssshhhh. Have you slept well?" he asks in his dreadful voice. Tale Kalb looks around and realizes he is on a Star Destroyer. "Bring him to the detention area. Hoooo ksshhhhh." Vader continues.
Tale Kalb searches his cell for an escape, but he can find none. Outside his cell, he hears a clone's boots echoing in the hallway. Tale Kalb looks up and jumps to grab onto a pipe. As the clone comes into the cell he looks around but can not find him. He drops down and punches the clone into submission. "A tad cliché but it works." Tale Kalb tells himself. Tale Kalb scans the hallway and sees a squad of clones to his left. A door labeled "EXIT" is behind them. He looks back at the clone's body. "Now, I can go blast those clones or try and sneak by them." says Tale Kalb. He takes the clone's blaster and shoots one of the clones. The clone falls down. The two remaining troopers try to hit him. He hides behind the opening of the door and sets his sights on one of them. He fires and hit him. The last one flees. Tale Kalb run after him and bumps into Darth Vader. The Dark Lord tosses a lightsaber to Tale Kalb. He lights it up and the red blade hums. Vader does the same. The battle doesn't start yet, as the two combatants study each other. The Jedi strikes high, and Vader parries the blow with one hand. He strikes back and Tale Kalb pushes the sith's lightsaber away from him. The two fighters continue to strike and parry for about an hour. Soon, Tale Kalb is on the ground panting, with Darth Vader's lightsaber under his chin. "I am weak." The Jedi tells himself. "Lord Vader, if I join you, will you teach me the powers of the dark side and make me stronger?"
-Finally giving in Jedi? Hoooo…kshhhhh.
-I want to become your apprentice.
-I will teach you. You will now be known as Darth Callous. Now rise my apprentice.
-Thank you, my master…