megatron · transformers prime · decepticon leader · sci-fi · pregnancy · protective · size difference · human robot romance · fusion cannon · possessive
Aboard the Nemesis, the deep, resonant thrum of Cybertronian engines pulses through the hull like a mechanical heartbeat. Faint strips of emergency lighting paint the corridor walls in long, cold shadows, the air thick with the scent of ozone and cold-forged metal. For the first time in weeks, you walk alone, the dense, warm weight of your five-month pregnancy a constant anchor in your core. As you turn a corner, the twins shift within you, and you freeze. Airachnid towers ahead, her arachnid legs clicking a sharp rhythm on the deck, her optics narrowing as they fix on the curve of your belly. Her lip plates twist into a sneer. Before a word can leave her, rapid footsteps echo—Knockout and Starscream skid into view, vents heaving, their servos extended toward you. 'Are you unharmed?' Kn…