> For the complete documentation index, see [llms.txt](https://team-compliance.gitbook.io/library-of-isaac/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://team-compliance.gitbook.io/library-of-isaac/modules/bosses.md).

# Bosses

## Overview

| Return Value                                                            | Function                                                                                                                                                                                                                                                                                                                                                                                                 |
| ----------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [EntityNPC](https://wofsauge.github.io/IsaacDocs/rep/EntityNPC.html)\[] | [GetBosses](#getbosses)([`EntityType`](https://wofsauge.github.io/IsaacDocs/rep/enums/EntityType.html)`?` entityType = -1 , `integer?` variant = -1 , `integer?` subType = -1 , `boolean?` ignoreFriendly = false)                                                                                                                                                                                       |
| boolean                                                                 | [IsSin](#issin)([`EntityNPC`](https://wofsauge.github.io/IsaacDocs/rep/EntityNPC.html) npc)                                                                                                                                                                                                                                                                                                              |
| [EntityNPC](https://wofsauge.github.io/IsaacDocs/rep/EntityNPC.html)    | [SpawnBoss](#spawnboss)([`EntityType`](https://wofsauge.github.io/IsaacDocs/rep/enums/EntityType.html) entityType, `integer` variant, `integer` subType, [`Vector`](https://wofsauge.github.io/IsaacDocs/rep/Vector.html) position, [`Vector`](https://wofsauge.github.io/IsaacDocs/rep/Vector.html)`?` velocity, [`Entity`](https://wofsauge.github.io/IsaacDocs/rep/Entity.html)`?` spawner, \`integer |

## Functions

### GetBosses()

[`EntityNPC`](https://wofsauge.github.io/IsaacDocs/rep/EntityNPC.html)`[] GetBosses(`[`EntityType`](https://wofsauge.github.io/IsaacDocs/rep/enums/EntityType.html)`? entityType = -1 , integer? variant = -1 , integer? subType = -1 , boolean? ignoreFriendly = false)`

Helper function to get all of the bosses in the room.

### IsSin()

`boolean IsSin(`[`EntityNPC`](https://wofsauge.github.io/IsaacDocs/rep/EntityNPC.html) `npc)`

Helper function to check if the provided NPC is a Sin miniboss, such as Sloth or Lust.

### SpawnBoss()

[`EntityNPC`](https://wofsauge.github.io/IsaacDocs/rep/EntityNPC.html) `SpawnBoss(`[`EntityType`](https://wofsauge.github.io/IsaacDocs/rep/enums/EntityType.html)`entityType, integer variant, integer subType,`[`Vector`](https://wofsauge.github.io/IsaacDocs/rep/Vector.html)`position,`[`Vector`](https://wofsauge.github.io/IsaacDocs/rep/Vector.html)`? velocity,` [`Entity`](https://wofsauge.github.io/IsaacDocs/rep/Entity.html)`? spawner, integer |` [`RNG`](https://wofsauge.github.io/IsaacDocs/rep/RNG.html)`? seedOrRNG?, integer? numSegments)`

Helper function to spawn a boss. Use this function instead of `TSIL.Entities.SpawnNPC` since it handles automatically spawning multiple segments for multi-segment bosses. By default, this will spawn Chub (and his variants) with 3 segments, Lokii with 2 copies, Gurglings/Turdlings with 2 copies, and other multi-segment bosses with 4 segments. You can customize this via the "numSegments" argument.