Growth Grid
Growth Grid: Ft or feet will soon turn into meters when tentacle body gets bigger. When the body gets smaller it stays as feet.
Example: Zed's original form was 12ft high and 10ft wide when Zed is 30-32ft high he will be 10 meters tall.
Tentacle height will also follow same rule.
Example: Body: 10 meters, Tentacles 15meters.
Current Xenokthu evolution: Body is 7ft tall and tentacles are 17ft tall. Remember only ft and meters will be used. Please refer to the general scale.
[General scale]:https://darkstarzero.wordpress.com/2013/06/04/attack-on-titan-9-a-hunter-of-its-own-kind/
A whole chapter won't be filled with useless and unnecessary accomplishment charts for doing nothing. There won't be any wild numbers out there or a thousand spells and skills that will be eventually forgotten.
Hope this gives you a picture of how the MC looks when he was in his eyeball tentacle monster form and how he looks in his Xenokthu form.