As the name suggests, the mod adds a new race of recruitable troops: the Jötnar of Viking myth. Modder ThisIsSovereign says the mod attempts to include this admittedly non-human race of giants into Bannerlord in “as lore friendly a way as possible”, which isn’t as much of a stretch as you might initially think. Nordic people are referenced in the open-world game, and so if you relax the ‘historical accuracy’ requirement a bit, there’s room for some big ol’ Jötnar on Calradia’s battlefields.
They’ll show up rarely as recruitable units by default – about 20% of Sturgian Recruits are replaced with Jötunn Recruits. There’s a full upgrade tree for the Jötnar, so they don’t have to stay at the recruit level. They can be trained to become powerful ranged, polearm, or melee units, eventually reaching the ranks of Chosen of Ymir, Chosen of Fenrir, or others. In total, there are 15 different unit types for the Jötnar included in the mod.