Introduction[]
In chapter 314 of Black Clover, an even bigger version of the Raging Black Bull is formed via the Ultra Giant Black Bull. I'll be calculating its mass.
Calculation[]
It was suggested that I use a spruce tree, so that's what I'll do. Spruce trees range from 20 to 60 meters tall, so I'll do 20 meters as a low-end, 40 meters (the average) as a mid-end, and 60 meters as a high-end.
Low-End:
Spruce Tree Height = 20 meters = 6 px
20 / 6 = 3.33 meters per px
Ultra Giant Black Bull Height = 220.64 px = 734.73 meters
Raging Black Bull Height = 58 meters
This is the height of the base, which is the same throughout when it becomes the Raging Black Bull, the pieces just get rearranged. Since the Ultra Giant Black Bull is a bigger version of the Raging Black Bull, I'll upscale the mass of the Raging Black Bull.
Raging Black Bull's Mass = 3.8608992e+7 kg
Ultra Giant Black Bull's Mass = (734.73 / 58)^3 * 3.8608992e+7 = 7.84852058e+10 kg
Mid-End:
Spruce Tree Height = 40 meters = 6 px
40 / 6 = 6.67 meters per px
Ultra Giant Black Bull Height = 220.64 px = 1471.67 meters
Ultra Giant Black Bull's Mass = (1471.67 / 58)^3 * 3.8608992e+7 = 6.30718824e+11 kg
High-End:
Spruce Tree Height = 60 meters = 6 px
60 / 6 = 10 meters per px
Ultra Giant Black Bull Height = 220.64 px = 2206.4 meters
Ultra Giant Black Bull's Mass = (2206.4 / 58)^3 * 3.8608992e+7 = 2.12548101e+12 kg
Final Result[]
Ultra Giant Black Bull:
Low-End = 7.84852058e+10 kg (Class G)
Mid-End = 6.30718824e+11 kg (Class G)
High-End = 2.12548101e+12 kg (Class T)
This should scale to an incompletely manifested Lucifero, who could gravity crush it despite Vanessa's Fate Manipulation normally keeping it intact, and Post-Timeskip Fuegoleon and Hellfire Incarnate Mereoleona, as both could remain standing and attack under this gravity.