Kluh is an interesting and terrifying character from the Marvel Comics universe, representing one of the darker facets of the Hulk's mythos. He is often described as the "Hulk's Hulk," showcasing a more malevolent and uncontrollable version of the already fearsome Green Goliath. Here's a detailed look into the story of Kluh, and how he came to be.

### Origin of Kluh

Kluh's existence is rooted in the emotional turmoil and immense rage that defines the Hulk. Bruce Banner, the Hulk's alter ego, has always struggled with his monstrous counterpart, often trying to keep the Hulk's destructive tendencies in check. However, there are moments when Banner's control wanes, allowing even darker forces within the Hulk to surface. Kluh is one such manifestation, emerging during times of extreme emotional distress and anger.

### Emergence of Kluh

Kluh first appears during the "AXIS" storyline, a major crossover event in Marvel Comics that explores the inversion of heroes and villains. In this storyline, a spell cast by Scarlet Witch and Doctor Doom inadvertently causes a widespread inversion of moral alignments among various characters, including the Hulk.

When the inversion spell affects Bruce Banner, it unleashes Kluh, a Hulk-like entity but with significantly different characteristics. Unlike the regular Hulk, who is driven by a mix of rage and a sense of misunderstood heroism, Kluh is driven purely by malevolence and a desire for destruction. He has red eyes, darker skin, and a more sinister appearance, symbolizing the deep-seated anger and darkness within Banner.

### Personality and Powers

Kluh embodies the Hulk's darkest aspects. He is more intelligent than the typical Hulk and far more malevolent. This intelligence, combined with his unrestrained anger, makes Kluh exceedingly dangerous. He delights in chaos and destruction, displaying no remorse for his actions.

In terms of powers, Kluh is even stronger than the Hulk, as his strength is augmented by the inversion spell. His abilities include superhuman strength, endurance, and regenerative healing, much like the Hulk, but amplified. This makes him one of the most formidable adversaries in the Marvel Universe.

### Key Events and Impact

During the "AXIS" event, Kluh's emergence causes significant havoc. He battles several heroes, including the inverted versions of Iron Man and Deadpool, showcasing his immense power and ruthlessness. His presence highlights the potential for darker aspects within even the most heroic individuals, emphasizing the complexity of Bruce Banner's character.

### Resolution

Eventually, the inversion spell is reversed, and Bruce Banner regains control, suppressing Kluh back into the depths of his psyche. However, the existence of Kluh serves as a constant reminder of the inner demons that Bruce must continually battle.