Comparison: General Monsters vs. Septarians in Star vs. the Forces of Evil

Appearance:

General Monsters: Extremely diverse — frog-like (Buff Frog), bird-like, multi-limbed, plant-based, demonic (Tom Lucitor), giant size-shifters (Globgor), bearicorn hybrids, and many more animalistic or fantastical forms.

Septarians: Sleek, humanoid reptilian lizards with blue/green skin, muscular builds, dark hair (often slicked back), sharp features, and yellow eyes. They have a more refined, almost "business-like" aesthetic (e.g., Toffee in suits).

Abilities:

General Monsters: Powers vary widely by individual — size manipulation, super strength, fire breath (Tom), minor magic, or no special abilities at all. Most are mortal and can be injured/killed normally.

Septarians: Signature rapid regeneration that allows them to regrow entire limbs and organs almost instantly, granting near-immortality. They also possess enhanced strength, durability, and combat prowess. Only Eclipsa's "darkest spell" or total disintegration can permanently kill them.

Lifespan/Immortality:

General Monsters: Normal lifespans; they age and die like most beings (though some species, like demons, may live longer).

Septarians: Effectively immortal due to regeneration; they can survive for centuries and hold grudges across generations (Toffee planned revenge over decades).

Society/Culture:

General Monsters: Live in scattered villages, the Monster Temple, or wilderness areas. Many are family-oriented and community-focused; later seasons show them seeking peace and equality under Eclipsa.

Septarians: Originate from the hidden, advanced city of Septarsis. More militaristic, sophisticated, and isolationist; known for extreme ruthlessness and long-term plotting.

Reputation:

General Monsters: Lumped together and discriminated against by Mewmans as "barbaric" or "inferior," despite many being peaceful or reformed (e.g., Buff Frog becomes an ally).

Septarians: Feared and distrusted by both Mewmans and other monsters due to their cunning, vengeful nature, and history of aggression.

Notable Examples:

General Monsters: Buff Frog, Globgor, Tom Lucitor, Ludo's various minions (bearicorns, rat soldiers), Meat Fork, residents of the Monster Temple.

Septarians: Toffee (master manipulator), Rasticore (regenerating bounty hunter), Seth (ancient warmonger).

Role in the Story:

General Monsters: Primarily portrayed as victims of Mewman colonialism and racism; many become allies fighting for integration and rights.