After the Jellicle Ball, Old Deuteronomy contemplates "what happiness is", referring to Grizabella. However, the cats do not understand him, so he has Jemima (also known as Sillabub), the youngest of all Jellicles, sing it in simpler terms ("The Moments of Happiness").  – short for Asparagus – shuffles forward as the next cat to be introduced ("Gus: The Theatre Cat"). He was once a famous actor but is now old and "suffers from palsy which makes his paws shake". He is accompanied by Jellylorum, his caretaker, who tells of his exploits. Gus then remembers how he once played the infamous pirate captain, Growltiger a.k.a. the Terror of the Thames ("Growltiger's Last Stand"). Gus tells the story about the pirate captain's romance with Lady Griddlebone, and how Growltiger was overtaken by the Siamese and forced to walk the plank to his death.