Does 'A Different Kryptonian [Invincible/Brightburn] SI' Explore Kryptonian Origins?

From what I've read, 'A Different Kryptonian [Invincible/Brightburn] SI' dives deep into Kryptonian lore but with a fresh twist. It doesn't just rehash Superman's origin. The story explores how the protagonist's Kryptonian biology interacts with Earth's environment differently, giving unique powers beyond the usual flight and heat vision. Their cells absorb solar energy more aggressively, leading to faster power growth but also instability. The fic also touches on Kryptonian society's caste system, hinting that the SI might belong to a warrior subclass, which explains their brutal efficiency in fights. The story suggests Krypton's destruction wasn't an accident but part of a cyclical rebirth process their species undergoes, which is a fascinating take I haven't seen elsewhere.

As someone who's analyzed countless superhero fics, this one stands out for its meticulous worldbuilding around Kryptonian physiology and culture. The protagonist's body acts like a solar battery constantly on the verge of overload, which creates tension during combat scenes when they risk burning out their own cells. Their blood contains microscopic crystals that store sunlight, explaining how they can use powers even at night.

The story reveals Krypton had multiple subspecies adapted for different planetary conditions. The SI's lineage comes from a volcanic region, making them resistant to extreme heat but vulnerable to certain electromagnetic frequencies. This biological detail becomes crucial when fighting tech-based enemies. Flashback sequences depict Krypton's last days through the SI's fragmented memories, showing a society torn between preserving their genetic legacy and embracing artificial evolution.

What's truly innovative is how the fic merges 'Invincible's' gritty realism with 'Brightburn's' horror elements. The SI's powers develop unpredictably, sometimes causing collateral damage that mirrors Brightburn's chaos. Their Kryptonian instincts emerge during life-or-death situations, revealing primal urges their human mind struggles to control. The story implies all Kryptonians had this savage potential, but Jor-El's lineage evolved beyond it through selective breeding, which adds layers to Superman's inherent nobility in other universes.

This fic treats Kryptonian origins like a dark fairy tale. The protagonist's DNA carries encrypted memories of Krypton's final moments—not just explosions, but the screams of billions echoing through the phantom zone. Their cells remember ancestral battles, unlocking combat techniques instinctively during fights. Unlike traditional Kryptonians who get stronger under yellow suns, this SI absorbs energy from all light spectra, including artificial sources, which leads to terrifying power surges.

The story suggests Kryptonians weren't naturally peaceful. Their civilization achieved stability through rigorous mental conditioning from birth, which the SI lacks. This explains their violent outbursts and why Krypton feared sending untrained children into space. The fic's best twist is revealing Kryptonians might have originated as bioweapons created by an older race, which explains their absurd adaptability. Their weakness to kryptonite isn't a flaw but a built-in kill switch. The protagonist discovers fragments of this truth through nightmares where their blood transforms into liquid metal, hinting at nanotech origins far beyond human science.