OutOfKeys
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With his human Injured in a scuffle, Megatron decides to test a theory on whether or not they can consume energon like cybertronians do within Cyberworld. His methods of testing this however, are more than a little unorthodox, but thankfully for you, they're certainly more than a little pleasurable too.
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The Best I'll Never Know by OutOfKeys
Fandoms: Transformers Animated (2007), Transformers: Shattered Glass
30 Mar 2026
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Trapped in Emperor Sumdac's lab, the head of Optimus Prime reflects on the death of one of his biggest supporters and what the future will hold.
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Better Than any Dirty Video You'd ever Seen by OutOfKeys
Fandoms: Transformers Animated (2007)
22 Mar 2026
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Greedy, greedy, greedy, greedy. That’s all you could think to yourself as you watched them, heat burning in your belly.
Sentinel Prime, sub-commander of the Elite Guard of Cybertron (as he so loved to remind you) was bent over, hands gripping hard at the sheets. Behind him, Optimus had a firm grasp on his hips, thumbs rubbing over the seam between where waist met pelvis.
Or, you watch your boyfriends get it on, indulge in some size difference, and make the most erotic cybertronian-on-human sex tape the world will never see.
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After a nice night out, Optimus calls Sentinel an endearment during sex—which would be nice if he knew what exactly this “sweetheart” thing meant!
Written for the 2026 Hey Sweetheart Collection!
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Take This Desire and Make it Burn Higher by OutOfKeys
Fandoms: Transformers Animated (2007)
17 Jan 2026
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Desperate, desperate, desperate.
Sentinel Prime awakes to himself deep in heat, in a nest he hadn't realized he built. Now he's needy and overwhelmed with lust—wishing he'd been more aware of his dilemma before it began plaguing his frame, alongside wishing that he'd been able to ask his newly minted Co-Commander (with benefits AND a strained history!) to join him for it.
Good thing he forgot to send that message to his physician and Rodimus Magnus, huh?
Recent bookmarks
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The Breeding Operation by grayseeker
Fandoms: Transformers - All Media Types, Transformers Generation One
12 Dec 2022
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When he's kidnapped and forced into an illegal breeding operation, Prowl must learn to submit. To being handled, milked, and ultimately… bred. To a two-headed beastformer. Will he be able to escape? More importantly, does he want to?
Excerpt:
"I've been on vacations, Jazz. Believe me, they don't help."
"I don't see how they could, if you spent the whole time doing paperwork."
Prowl grimaces. This was the problem with being known too well. He had spent his last vacation holed up in his cabana, slapping on one heat-suppressant patch after another as he powered his way through a mountain of paperwork.
"On the other hand," Jazz continues, "maybe you just haven't taken the right kind of trip."
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Bookmarked by OutOfKeys
22 Jul 2026
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Just Megatron with big boobs, small valve, and a surprised-but-mostly-delighted Optimus Prime.
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Bookmarked by OutOfKeys
19 Jul 2026
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Blue had always wanted to be close to him. Now he can.
Bookmarked by OutOfKeys
11 Jul 2026
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Scientific Discovery: Vampires Are Real and Oh No They're Hot by absolute_minimum for AtomicBloom
Fandoms: Transformers - All Media Types, Transformers Generation One
30 Oct 2022
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Shockwave could feel Soundwave siphoning his energon, the sharp prick of his fangs eased by the warmth that flooded Shockwave's lines, a liquid heat that pooled in his abdomen. When Soundwave drew back, a drop of bright pink energon stained his lower lip. He licked it away, fangs gleaming.
Something climbs into a scientist's tower, and said scientist cannot help but accede to its request– not when he could learn so much about it.
It's for science. Definitely.
Bookmarked by OutOfKeys
10 Jul 2026
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Snared by LinaValentina
Fandoms: Transformers - All Media Types, Transformers: Cyberworld (Cartoon)
02 Nov 2025
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A soft, distinct puff of steam escaped his intake. Then another. He cycled his vents fully open, a desperate, noisy gasp that did nothing to cool the fire within. Somewhere deep in his pelvic housing, a new, damning signal registered. A slickness.
"How exactly did you manage this?" Optimus asked, his voice calm, conversational.
Megatron couldn't answer. To speak was to risk a moan.
Bookmarked by OutOfKeys
10 Jul 2026