Grigori

Grigori is known by the epithet “Giant Rock Grigori,” highlighting his overwhelming toughness and stubborn personality.

He fights on behalf of the Holy Church but has a hot-blooded temperament and is quick to argue and pick fights.

He serves under the same organization as Hinata Sakaguchi and works alongside fellow Three Martial Sages such as Saare and Glenda Attley.

Despite his status as a saint-level warrior, he tends to be manipulated by higher-level schemes and politics beyond his perception.

Grigori is hot-tempered, aggressive, and very straightforward.

When Hinata Sakaguchi announced in the Council of the Two Wings that she did not intend to oppose Rimuru Tempest, Grigori openly and directly argued against her stance.

He looks down on “elegant knights” or overly refined opponents, preferring direct brawls and rough combat.

His casual taunt, “So you fancy knights think you can pick a fight with us?” captures his rough, street-fighter attitude.

Despite his bluster, he is not purely villainous; he is more of a muscle-headed warrior who gets swept up in the plans of others.

After his defeat and subsequent fall from grace, he shows enough humility to accept training and backroom work instead of clinging to lost prestige.

Grigori is one of the Three Martial Sages, placing him among the top combatants of the Holy Church.

His specialty is incredible physical durability and defense, reflected in the phrase “Immovable in All Things.”

This “Immovable in All Things” toughness is embodied directly in his body, giving him a rock-like, unyielding constitution.

He fights using a halberd, combining the power of an axe and the reach of a spear for devastating melee attacks.

Grigori excels in front-line combat where he can stand as a living bulwark.

However, his reliance on brute force and durability leaves him vulnerable when facing overwhelmingly superior or more versatile opponents.

Grigori belongs to the Holy Church and is counted as one of the Ten Great Saints, placing him in the same broad hierarchy as Hinata.

Together with Hinata’s Holy Knight forces, he ends up being used as a pawn in the joint schemes of the Seven Days Clergy and the Rosso family.

Due to these conspiracies, Grigori and the other Holy Knights are maneuvered into conflict with the nation of Tempest.

They are essentially dragged into a war alongside the Falmuth Kingdom’s army, which seeks a rematch against Rimuru Tempest’s forces.

His aggressive nature and loyalty to the Church’s cause make him eager for combat, but he fails to see the bigger political picture.

This shortsightedness leads him into battles where he is badly outmatched by Tempest’s elite warriors.

Confrontation in Falmuth

In the events covered in volume 7 of the light novel, Grigori moves toward the Kingdom of Falmuth.

There, he is involved in an operation to suppress Youm Farmenas and the abdicated former king Edmaris Falmuth.

During this campaign, Grigori faces off against Hakurou, Ranga, and Gabiru.

The battle turns into a disaster for him and his troops.

Ranga annihilates Grigori’s allied forces, wiping out his support almost instantly.

Grigori himself is badly beaten and seriously injured in the ensuing clash.

This crushing defeat devastates his reputation within the Holy Church.

Because of this failure, he cannot return to the Holy Headquarters.

Clash on the Highway

In another encounter, Grigori prepares to intercept an army led by Gobta and Gabiru on a highway leading toward Tempest.

Confident in his own strength, he attempts to stop them by force.

However, the battle becomes one-sided, and Grigori is treated like a plaything by the enemy’s monstrous “dog,” referring humorously to Ranga.

The encounter turns into a humiliating spectacle rather than a glorious stand.

These back-to-back beatdowns underscore the difference in power between the Holy Church’s elite and Tempest’s top combatants.

Grigori, despite his title and toughness, realizes firsthand how overwhelming Tempest’s forces truly are.

After his disastrous failure in Falmuth, Grigori cannot return to the Holy Headquarters.

His position within the Holy Church is effectively ruined, at least in the short term.

He ends up on the run together with his colleague Saare.

The two of them live a kind of fugitive lifestyle, avoiding direct contact with the Church while figuring out what to do next.

Eventually, both Grigori and Saare are taken in by Razen.

Under Razen’s guidance, they become his disciples and begin working behind the scenes rather than on the front lines.

Grigori is slated to take on secret, behind-the-scenes duties for the Kingdom of Farmenas in the future.

This marks a shift from a front-line Holy Knight to a more covert operative supporting national interests from the shadows.

In the spinoff series The Slime Diaries: Trinity in Tempest (also known as “Magokurashi no Trinity”), Grigori appears in a more lighthearted role.

He serves as a training opponent for the three main girls of the spinoff.

He tries to keep his whereabouts secret from Hinata Sakaguchi, asking for confidentiality about his presence.

However, one of the “airheaded” characters lets the information slip.

As a result, Hinata easily discovers that Grigori had been enjoying the Opening Festival in Tempest all along.

This comedic reveal highlights the gap between his tough-guy image and his less-than-perfect ability to hide.

Hinata Sakaguchi

Grigori works under the same broader organization as Hinata Sakaguchi.

He respects her strength but does not always agree with her decisions.

When Hinata adopts a non-hostile policy toward Rimuru Tempest and Tempest, Grigori openly opposes her in council.

His stance reflects a more old-fashioned, confrontational view of monsters and demon lords.

Even after becoming a fugitive, he is wary of Hinata discovering his continued activities.

Their dynamic mixes respect, fear, and ideological disagreement.

Saare

Saare is one of the other Three Martial Sages and Grigori’s colleague.

After Grigori’s defeat and fall from grace, Saare ends up accompanying him.

The two share their fate as fugitives, moving from front-line saints to Razen’s disciples.

Their partnership creates a kind of “exiled elite warriors” duo, now working behind the scenes instead of in the spotlight.

Glenda Attley

Glenda Attley, along with Grigori and Saare, completes the trio known as the Three Martial Sages.

While the text here focuses less on Glenda directly, Grigori’s status is defined in part by belonging to this powerful trio.

Their shared title emphasizes that Grigori is not a random knight but one of the top three martial specialists of the Holy Church.

His defeats are therefore especially shocking given his supposed level.

In the anime adaptation of That Time I Got Reincarnated as a Slime, Grigori is voiced by Masafumi Yamane.

The performance emphasizes his loud, rough, and combative personality, matching his image as “Giant Rock Grigori.”