Looks like we're shipmates, squirt!

All right!

But if you get space-sick you're gonna walk home!

Hurry!

Wait, Ultra Magnus! Arcee's still out there!

Jump!

Do you have her?

No! Turn the ship around!

We can't do that, Springer!

What? Arcee!!

She was Arcee.

She was the Autobot's beloved scout.

When fleeing Autobot City during an attack, she stumbled.

Springer tried to grab her, but missed.

The Autobots were forced to leave her behind.

The Decepticons were not.

Taken to Unicron, Galvatron had her reformatted against her will.

She is now Sinistra, the Huntress.

Woe be unto the Autobots.

(UPDATE: Added Sinistra's own theme song! Check it out, in the bot!)

OPENING 1: You are her Decepticon Ally!

OPENING 2: You are an Autobot assigned to stop her!

BONUS ART: