I would like to explain my headcanons about the series Gormiti: The Lords of Nature return! (2008) and The Supreme Eclipse Era! (2009), and why I ship Nick and Cyclops (since it's a rarepair that I'm the only one to ship ^^'):
First, why I ship Nick and Cyclops:
Cyclops seems pretty docile and despite being a leader, we never see him launch an attack on his own with his soldiers. (The only time he was alone was a diversion) He always accompanies other lava gormiti. He's also able to work with Lavor, who is notoriously bossy, takes credit for all the victories and blames others for his mistakes.
He's an ancient being. I imagine he could take an interest in the human world out of boredom from his repetitive life.
Nick is the nerd of the good guys, he loves History and is interested in everything related to the Gorm. Cyclops must have noticed it and think he can learn more from him than from Lucas, Toby or Jessica. Moreover, Nick's gormiti form is very strong and powerful, which fits my headcanon that power is highly valued in lava Gormiti society. It would help start Cyclops' crush.
They could exchange information on their cultures; Nick what the human world is like, and Cyclops what he has seen over the millenia (and what lava gormiti actually do for fun when they are not invading other territories, since I imagine no one really knows or cares about it, or they just assume they only plan their next invasion.)
I also ship: Cyclops x Lavor, Cyclops x Electricon, Electricon x Screaming Guardian, Lavor x Armageddon (even if I'm not fond of the latter's design), Electricon x a female forest gormiti OC, (Cyclops x Lucas, Cyclops x Mimic the Fast)
Lava gormiti have mundane hobbies, like sculpture, singing, playing board games, sports, making stained glass, friendly fights, the non asexual ones may hook up with each other...
There are no female lava gormiti, or at least they all have male reproductive organs. I don't think lava monsters would view gender the same way as humans tend to do anyway. Regarding their sexuality, they can be gay, asexual, aromantic, pansexual... but I don't imagine anything that could be labeled as straight by human standards. They could reproduce sexually with females from other people and create sterile hybrids, but for some reason it's very frown upon. They are created magically from lava.
They are basically ancient golems several millenia old, they don't care for monogamy. Some leaders, like Cyclops, have a small harem of soldiers who really love them.
I'm not sure how I view their digestive track, and how functional it is, yet. I'm not sure how they bottom either, but they can.
I have other HC about their morality, but it's hard to elaborate and it would take a while.
My headcanons are subject to change, and I would love to read yours too, whether in comment, MP or ask :)