Lucile is quite emotional and sensitive. When she gets upset or angry she fires missiles from her head (usually targeting Speedy or Guido). In this manner she can protect herself from any over amorous thugs. There were also a couple of occasions where she unwittingly used this to defeat the monster of the week.

Lucille is of a very sweet temperament, though slightly naive. She's one of the friendliest members of the cast, and only gets angry on rare occasions. When she was kidnapped (along with many other train passengers) and forced to dig a hole by Bad Bird she dropped what she was doing to care for an elderly passenger who was about to collapse from exhaustion. She was also happy to spend the day with a disguised Princess Vi.

She is also a bit shy. She easily gets embarrassed when Speedy and Guido both dote on her. When she was approached by an offer to become a pop star, she only agreed to do it if Polly sang with her.

In the Japanese version her name Omitsu comes from Mitsu which translates as 'Honey'. Similarities have been drawn between this character and the Omitsu from the Gambare Goemon games. She is similar in appearance, and also owns a Japanese tea shop. They both have similar relationships with the main characters. However, Lucille's knowledge of the Pizza Cats true identity tends to vary between episodes.