Relationship between Grog and Keyleth

Grog calls Keyleth's saber-toothed tiger form "Minxie", after the two of them (Keyleth in her cat form) attempted to intimidate somebody and Keyleth pretended to be Grog's pet.

Ever since Raishan revealed that she's been in the guise of Seeker Asum Emring ever since their return from the Feywild, it's Grog that has been acting as Keyleth's anchor, calming her down so that in her rage she wouldn't cause the destruction of Whitestone by attacking the Diseased Deceiver right then and there. He later told her that she would get her chance one day but that she needs to be patient, and when the day comes, he'll be there to help her.