The Creatures of Grimm in this book will be different in terms of appearance and size after the events of Chapter 0. Here's a guide to their size and looks. Just imagine the Grimm here has more scales/thicker armor plates.

While the measurements here are just estimated by yours truly, these measurements will be followed and will be mentioned in the story.

Also ignore the given size comparisons in the following images.

DISCLAIMER:  The images below belong to their respectful owners. I just found them on Google.

Alpha Beowulf:

- 16 meters in height

- Eyes glow green instead of red.

Balrog: 

- Ignore its sword and the whip. This Grimm will not utilize its sword and whip.

- 19 meters in height

- 15 meters wingspan

The Baron Felfiend: 

- 15 meters in height

- 28 meters in length

Beriwingel:

- 19.3 meters in height

Cockatrice:

- 23.5 meters in length

- 18.3 meters wingspan (estimated)

- Spits unknown green acid that melts even the toughest and thickest armor/metal

Glaive-tail:

- Codename: Hell's Bardiche

- 15 meters in height

- 26 meters in length

Griffon:

- 15 meters in height

- 24.7 meters in lenght

- 18.4 meters wingspan

Ground Dweller:

- 29.4 meters in length (Adult)

- 20 meters in length (Young)

Hollower:

- 10 meters in height

- 17.4 meters in length

- 14 meters wingspan

Karkadruum:

- 15 meters in height

- 19 meters in length

Goliath:

- 20.6 meters in height

- 26.3 meters in length

Komodusk Alpha:

- 19 meters in height

- 23 meters in length

Komodusk Magnus:

- 29. 5 meters in height

- 36.4 meters in length

- 23 meters wingspan

Satyr Grimm:

- Codename: Lilith

- 20.6 meters in height 

Maneleu:

- 34.7 meters in length

Manticore/Mantycore:

- Has two types/variations

[Ground Type/Variant]

- 26 meters in height

- 29 meters in length

[Flight/Winged Type/Variant]

- 23 meters in height

- 25 meters in length

- 17 meters wingspan

Minor Garm:

- 15 meters in height

- 21 meters in length

Mutant Beowulf:

- 17 meters in height

[ TO BE CONTINUED IN PART II ]