King Slime

King Slime is a pre-Hardmode boss in Terraria.^[1] Defeating King Slime is not required to progress through the game.^[1] The first time King Slime is defeated, the Nerdy Slime town pet appears.^[1][2] King Slime has a maximum health of 2000 in Classic Mode, 2800 in Expert Mode, and 3570 in Master Mode.^[9]

He deals 40 damage in Classic Mode, 64 in Expert Mode, and 96 in Master Mode.^[9]

Quick Facts

Type: Boss Slime
Environment: Forest Slime Rain
AI Type: King Slime AI
Damage: 40 / 64 / 96
Max Life: 2000 / 2800 / 3570
Defense: 10
KB Resist: 100%
Coins: 1 Gold (Dropped by Treasure Bag [ 1 ])

Facts from the infobox of King Slime on the Terraria Wiki (wiki.gg, CC BY-NC-SA 4.0).

Manual

Using a Slime Crown in any biome at any time allows the player to manually summon King Slime.^[3]

Random

It has a 1/300 (0.33%) chance to spawn naturally under specific conditions, including being in the outer lateral sixths of the map, above zero depth, during daytime, and not in a Graveyard biome.^[4]

Slime Rain

During the Slime Rain event, King Slime spawns after 150 slimes are killed, or 75 if it has already been defeated in that world.^[5]

Remix

In Remix worlds, slaying a slime offers a 1/200 (0.5%) probability of causing King Slime to appear, assuming the boss has not been beaten, is not currently present, and a minimum of one player possesses over 140 maximum health and over 8 defense.^[6]

Behavior

King Slime attacks by hopping toward the player and summons Blue Slimes to aid him.^[7][8]

References

"King Slime" (opening section) - Terraria Wiki on wiki.gg, revision 1031643 terraria.wiki.gg
"King Slime", section "Aftermath" - Terraria Wiki on wiki.gg, revision 1031643 terraria.wiki.gg
"King Slime", section "Manual" - Terraria Wiki on wiki.gg, revision 1031643 terraria.wiki.gg
"King Slime", section "Random" - Terraria Wiki on wiki.gg, revision 1031643 terraria.wiki.gg
"King Slime", section "Slime Rain" - Terraria Wiki on wiki.gg, revision 1031643 terraria.wiki.gg
"King Slime", section "Remix" - Terraria Wiki on wiki.gg, revision 1031643 terraria.wiki.gg
"King Slime", section "Behavior" - Terraria Wiki on wiki.gg, revision 1031643 terraria.wiki.gg
"King Slime", section "Spawning slimes" - Terraria Wiki on wiki.gg, revision 1031643 terraria.wiki.gg
"King Slime" (infobox) - Terraria Wiki on wiki.gg, revision 1031643 terraria.wiki.gg

Text adapted from the Terraria Wiki on wiki.gg (CC BY-NC-SA 4.0), used by Freedom Games LLC, the operator of wiki.gg and Codexery. Page: King Slime (contributors). Codexery summarised the page: each numbered sentence above was checked against the wiki section it cites before publication, and this entry is shared under the same licence.