Creatures 1
Flagship Grendels
These Grendels are breedable, and have improved fertility over standard creatures, as well as a faster lifespan, stronger immune system, and docile temperament. They are based on Chris Double's eater norns. Included is a .GEN file and two .EXP files (male and female newborns.) Download here. Beta version.
Voice Patch
This stops the female norns from having squeaky high pitched voices, which I personally can't stand. Download here. A variant of this is available on the DS page.
Links
Creatures Developer Resource
Aforementioned eater norns available here.
Palace of the Evil Shee
Pensioner Grendel sprites available here.
Universe of Ettins
Baby Grendel sprites available here.
Treesprite's Creatures Grove
Multiple Grendel Button and Grendel World available here.