This is how Starscream forms an alliance with The Mane-iac goes in The Power Bots.
[We view the Mane-iac's headquarters, her shampoo factory]
[Starscream arrives and transforms to robot mode and pries the door open]
Starscream: So you're the one who the pathetic assistant of the Princess of Friendship was talking about.
[The Mane-iac gives a signal and the henchponies step away]
The Mane-iac: Who are you?
Starscream: I am Starscream.
The Mane-iac: Why are you here?
Starscream: To propose an alliance. You see we have much more in common than you think. And I am not merely referring to our battle scars.
The Mane-iac: What could I possibly gain from such an arrangement?
Starscream: Insider knowledge.
[The Mane-iac looks at him]
Starscream: Now, you must understand. Super-powers aren't found but earnt. Which means they will reject any soul. Expect proper ones who believe in justice.
The Mane-iac: Go on.
Starscream: Some super-powers come from within. But I can possible gain that sort of power too. If I had the right oppotunity.
[He turns to the Mane-iac]
Starscream: We could possibly gain enough power to dominate the entire planet. Enough power for us to share.
The Mane-iac: If that means that power meeting my constant demands.
Starscream: Ahhh, intending to build an army are you?
[He lifts her up by her strands of long green hair]
Starscream: I am no stranger to ambition.