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.

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.

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!