Now there are many PKs that exist in my world, so might as well do all of them. For now I'll give them brief introductions.

PK (Original Universe)
He is the ancestor to the Legendary Swordsmaster Senki. He wields the first generation Electronic Blade, named Rai-Saber. He is also the host of the Tempus, the wind entity.

Sabre (Alternate Universe)
Originally brainwashed and became Evil PK. Currently he's free from the brainwashing. Sabre is the host of the speed entity, Tachyus.

Lunar Shadow (OtherWorld)
He confronted EVE in his early days, which led him to be brainwashed into Dark Shadow. Currently unbrainwashed. Lunar is the host of Scaleos, the entity of judgement and balance.

Electro Arc
A clone of PK from the Thunder Cross project. He can produce electricity. He is the host of the entity of electricity, Electros.

EVE
An evil being who was cultivated in OtherWorld. Currently resides in his own dimension. He is the host of Negalos, the entity of negative energy.

PK (Touhou)
A human living in Gensokyo. He wields the second generation Electronic Sword named Pandora.

He was the host of Chronos, the entity of time, before switching to Necros, entity of the dead.

Space PK (Touhou)
A human who lives in Gensokyo and the Western world. He can use the power of space and dimensions thanks to being the host of Kairos, the entity of space and dimension.

Sabre (Touhou, Alternate)
A human who lives in an Alternate world of Gensokyo. He wields the AETS (Aura Enabling Talking Sword) that goes by the name of Aerin. He is the host of Kibaros, the entity of aura.

PK (Geometry Dash)
A human and level creator that lives in Geometry Neighborhood with 21 neighbors. He usually travels through different dimensions with his neighbors and Robert Topala. He obtains the third generation Electronic Talking Sword named Shanryu, after meeting the original PK. GD PK is the host of Gravitus, the entity of gravity.