Dear, Vector Prime.
Are there Maximal/Predacons that transform into peacocks, eels, octopuses or centipedes?
Dear Bestial Believer,
It should come as no surprise that in the vast multiverse, there have been many Maximals and Predacons that took otherwise unseen alternate modes. And indeed, some of them have assumed the form of those animals.
Vain Train was a Transmetal 2 Maximal whose love of battle was only matched by his love of his own reflection. A natural warrior and unrepentant narcissist, he was an infuriating ally to his fellow maximals, and a formidable foe to his enemies—especially with his vast array of laser-eyes. Blackarachnia and Silverbolt frequently found themselves the victims of both, as Vain Train felt they were the only two bots to match his beauty.
The Maximal Volter turned into an eel, which she used for amphibious assault, striking at the Predacons from rivers and marshes, wrapping them up in her slippery beast mode, or unleashing her electric-slime cannon. She was later affected by the quantum surge, although to her disappointment, she wasn't granted an additional alternate mode.
By comparison, Octobore was much more pleased with his drill mode, his eight octopus arms combining when he turned into his transmetal vehicle mode, allowing him to cut through the ground as easily as he could swim, and spit out the debris like a cloud of ink. Originally a Maximal protoform, he was converted to the Predacons by one of Tarantulas' shell programs.
Another of Tarantulas' experiments produced the fearsome Centimax, a colossal Predacon centipede. She turned on her creator almost as soon as she was brought online—despite him trying to make her loyal, as a replacement for Blackarachnia. Megatron was charmed by her brutal strength, and even more so by her disgust for Tarantulas. Fortunately for the Maximals, Centimax was too arrogant to work for Megatron, and in the end the Predacon leader placed her into stasis until he could find a way to control her—which he never did before the Beast Wars ended. In an interestingly frequent case of dimensional resonance, she looked a lot like the Maximal Mukage, a former ninja warrior, now as devoted to peace as his fellow Insecatrons.