Niles (Daniel Davis) reveals his name as "just Niles, like Cher". Nonetheless, the character had a full name: 'Edward Ezel Niles'.
Ian Abercrombie (Butler Inspector #1) and Brian George (Butler Inspector #2) both had recurring roles on 'Seinfeld (1989)': Abercrombie as 'Justin Pitt' (7 episodes) and George as 'Babu Bhatt' (3 episodes).
Israeli-born British actor Brian George (Butler Inspector #2) also played 'Ranjit Sudar' on The Bridges of L.A. County (1995). Both sitcoms shared similar storylines since both had common writers throughout their runs.