Dimension 3 is one of the two new maps introduced in Update 9. Training locations in this dimension range from 1Qn to 1Sp for each stat. This dimension seems to be One Piece themed.
Contents
Training Locations
Here are the locations of each training zone, its multiplier boost, and the amount of power for each increment in order to get the boost in that area
Strength
Durability
Chakra
Map
Chikara Crate Locations
Boss

The Boss in this dimension is Beast King (Known as Kaido in the anime) who gives a high amount of Yen and Chikara Shards. The powers he drops are: Barrier, Blade Whirlwind, Conqueror's Haki.
Portal Location
The portals to access the other 4 dimensions are located near Whitebeard Ship. The portal to Dimension 1 is located on the water, while the portal to Dimension 2, Dimension 4, and the Tournament Dimension are in the air.
NPC Locations
Hermit, Wukong, Giovanni, Ghoul, and the Quirk unlocker are located at the spawn area. The Sword Style unlocker is located at the Mountain. The Grimoire unlocker is located at Grimoire Tower. The Bloodlines unlocker is located on the third level of Akuma mountain.
Trivia
- Dimension 3 is based off of Marineford's location from One Piece