That Time I Got Reincarnated as a Slime Codexery

Gobukichi's Transformation

The Great Demon Lord's adorable disguise for navigating the human world unnoticed.

Gobukichi's Transformation

Gobukichi's Transformation is not a standard skill or ability found in the natural progression of Rimuru Tempest's power set, but rather a fan-coined term often used to describe the comedic and temporary physical alterations Rimuru undergoes when attempting to mimic human children or specific forms for disguise. While Rimuru possesses the God-tier Skill [Storm of Destruction] and the Great Demon Lord status, this 'transformation' refers specifically to his ability to reshape his slime body into a small, adorable boy-like figure, usually named Gobukichi in fan circles, to blend in with human societies or prank his allies. This capability stems from Rimuru's innate [Perfect Unification] and the versatile nature of his slime physiology, which allows him to alter density, color, and shape at will. Unlike a true transformation skill that grants new powers, this form is primarily cosmetic and tactical, allowing the Great Demon Lord to move unnoticed among humans while retaining his full cognitive abilities and combat potential if threatened.

User
Rimuru Tempest
Skill Origin
Innate Slime Physiology / [Perfect Unification]
Form Type
Humanoid Disguise (Child)
Primary Purpose
Stealth, Espionage, and Comedic Relief
Status
Active Capability

Lore & Background

In the expansive lore of Tempest, Rimuru's ability to shapeshift is a fundamental aspect of his existence as a slime. While he can take on monstrous forms like a giant dragon or a terrifying demon lord, the 'Gobukichi' form represents his most human-like and vulnerable appearance. This specific manifestation is often utilized when Rimuru needs to gather intelligence in human cities without alerting high-level mages or adventurers who might detect a Great Demon Lord's aura. The name 'Gobukichi' itself is a playful nod to his identity, combining his nickname with a generic Japanese boy's name, reflecting the lighthearted tone of these encounters. The lore surrounding this form highlights the duality of Rimuru's character: a being of immense destructive power who chooses peace and often finds joy in simple human interactions. When in this guise, he suppresses his overwhelming magical energy to near-zero levels, making him indistinguishable from an ordinary child to most observers. This allows him to experience daily life, eat human food, and form connections that would be impossible if he appeared as a slime or a demon lord, reinforcing his philosophy of building bridges between races.

In Their Own Story

The bustling market of the Kingdom was alive with noise, but for the small boy in the blue tunic, it was a symphony of discovery. He tugged gently on the sleeve of a merchant, his large eyes wide with innocent curiosity as he pointed at a stack of sweet pastries. The merchant smiled warmly, unaware that this 'child' had just dismantled an entire army of monsters minutes prior. With a giggle that sounded perfectly human, the boy took a bite, savoring the sugar while secretly analyzing the structural integrity of the stall's roof for potential escape routes.

Reader's Guide

**Skill Name**: Gobukichi's Transformation (Fan Term for Humanoid Disguise) **Rank**: Innate Ability / Enhanced by [Perfect Unification]

This capability is not a distinct skill acquired through leveling but rather an advanced application of Rimuru's core slime physiology. It allows the user to perfectly mimic the appearance, voice, and basic mannerisms of a human child, specifically resembling a boy named Gobukichi in fan interpretations. The primary effect is total visual and auditory deception. The form can replicate clothing, hair, and facial features with pixel-perfect accuracy. However, it comes with significant limitations: the user must consciously suppress their magical aura, which prevents them from using high-tier magic without breaking the disguise. Furthermore, while durable, this small form lacks the raw physical mass of Rimuru's standard slime state. Notable mastery is exclusive to Rimuru Tempest, who utilizes this for espionage and social integration. It serves as a crucial tool in his diplomatic efforts, allowing him to observe human cultures without the bias or fear that accompanies his true identity.

Did You Know?

More in Skills & Abilities

Elsewhere in the That Time I Got Reincarnated as a Slime universe

Open in the interactive codex →