Mech: Shattering of the Galaxy - Chapter 182 - 92 Finally, My Lord, You’ve Come Online (Congratulations to the Alliance Hierarch on 1 Billion Light-Years)

The two faced number one female spy transmigrates to a different world and becomes an outrageous idiot girl. When she woke up, what she had to face was consecutive blows of the decline of her family clan, her crippled martial skills, and her disfiguration. To protect her family, she must obtain the treasured book, obtain outstanding achievements, summon a dark beast army. Wait and see how in this unfamiliar, dark magical continent, she dies and becomes a demon then steps up to the top, making all of the formidable people in the world bow down to her in respect.

- Description from Novelupdates

The starry sky mecha is as powerful as a dragon, and the gods and demons in the abyss are whispering and roaring.

In this era of collision between new techniques and old techniques, technology and divine power, Lu Yuan stumbled into the world with an attribute panel that allowed unlimited job changes.

“Occupation [Martial Arts Grandmaster] + material [Heart of the Nine-Headed Dragon of the Abyss], can be advanced and transferred to [Darkfall Dragon Sect]….”

Lu Yuan looked at his hands that were gradually covered with black scales, and the black hair behind his back was dancing wildly in the wind. His scarlet eyes stared at the humanoid mechanical body flying across the night sky like meteors, and whispered to himself with a smile: ” Now…I should be able to tear apart mechas with my hands…”

- Description from novelbuddy

Zavier met Cosmic Consciousness after his death. He was satisfied with every system that Cosmic Consciousness exhibited, so he wanted all of them. Surprisingly, the Cosmic Consciousness obliged him.

Zavier was reborn in an isekai full of magic and alchemy. Now, he had many routes to upgrade. Interestingly, to coordinate these systems, Cosmic Consciousness gave him the gift of being able to duplicate himself. He could clone a finite number of himself to manipulate these systems.

Magus, Alchemist, Mesmer, Tamer, Hunter, Vampire, Werewolf, Dragonknight, Necromancer.....

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By the way, it wouldn't appear NTR or some bullshit harem of courtships. MC of course will have harem but not for cliches.