Giant Spawn

Giant Spawn is a minimalistic configurable mod which allows giants to spawn naturally. Whenever a zombie spawns it has a chance to be a giant, by default 1/20 and only on the surface. The mod also adds a custom AI to the giants based on the zombie AI.

Giants are undead, can spawn wearing armour and wielding a weapon, drop configurable loot, and make zombie sounds. You can also choose where they spawn and tweak their stats like health, speed, and knockback resistance.

You may also be interested in Skeleton Horse Spawn or Zombie Horse Spawn.

All available config options:

chanceSurfaceZombieIsGiant default 0.05, min 0, max 1.0
The chance a zombie that has spawned on the surface is a giant.

shouldBurnGiantsInDaylight default true
If enabled, burns giants when daylight shines upon them.

onlySpawnGiantOnSurface default true
If enabled, a giant will only spawn on the surface.

giantMovementSpeedModifier default 1.0, min 0, max 20.0
The giant movement speed modifier relative to the base zombie movement speed.

giantAttackDamageModifier default 2.0, min 0, max 20.0
The giant attack damage modifier relative to the base zombie attack damage.

giantMaxHealthModifier default 1.0, min 0.1, max 10.0
The giant max health modifier relative to the base giant max health of 100.

giantKnockbackResistance default 0.0, min 0, max 1.0
How much knockback a giant ignores, from 0 (none) to 1 (all).

giantFollowRange default 35.0, min 0, max 128.0
The range in blocks in which a giant finds and follows its target.

giantExperienceReward default 5, min 0, max 10000
The amount of experience a giant drops when it is killed by a player.

chanceGiantSpawnsWithEquipment default 0.25, min 0, max 1.0
The chance a giant spawns with a set of armor and a sword or shovel.

preventGiantDespawning default false
If enabled, giants never despawn.

giantsUseZombieSounds default true
If enabled, giants make the sounds of a zombie, at a lower pitch.

giantDropItems default "minecraft:rotten_flesh=4-20"
The items a giant drops when it dies, each with an amount or a range. For example: 'minecraft:rotten_flesh=4-20,minecraft:iron_ingot=1'.

dimensionsToSpawnIn default ""
Dimensions in which zombies can turn into giants, separated by a comma. Leave empty for every dimension. For example: 'minecraft:overworld'.

biomesToSpawnIn default ""
Biomes in which zombies can turn into giants, separated by a comma. Biome tags work too, starting with a '#'. Leave empty for every biome. For example: 'minecraft:plains,#minecraft:is_forest'.

The giant moving with its custom AI:

You may freely use this mod in any modpack, as long as the download remains hosted within the CurseForge or Modrinth ecosystem.

Serilum.com contains an overview and more information on all mods available.

Comments are disabled as I'm unable to keep track of them across so many separate mod pages.
For issues, ideas, suggestions or anything else there is the Github repo. Thanks!