Kirin-chan

Kirin-chan is a Dwarf Summoner-Animal Trainer in the Black Sword Knights.

Even though she looks like a joke with her giraffe-head headdress, she's actually a highly skilled combatant and entertainer who utilizes high-speed comedy action. Her favorite phrase is "Giraffes can run at 60km per hour?!" Anyone who points out her short stature will be met with a sharp headbutt from her giraffe head.

Synopsis
When Isaac is invited to the Round Table Conference, Kirin-chan is seen among the members in the background, watching him and Rezarick converse.

After the Log Horizon members move into their new guild house only to find it completely dirty, Isaac barges in with some of his Summoners, Kirin-chan among them. He then has them use their Undines to flood the entire building, completely cleaning it in the process before leaving as quickly as they had come.