Normal: "A worker of the Mi'ihen Highroad fiend colony. Although a fiend, it lives within a complex social hierarchy. It is known to explode when near death, so be cautious." Oversoul: "A worker of the Mi'ihen Highroad fiend colony. Although a fiend, it lives within a complex social hierarchy. Oversouled, it sometimes deals successive attacks." — Scan
The Hug Bug is an enemy in Final Fantasy X-2. They are moderately difficult, but only when in Oversoul as they can use Triple Attack as well as Thundaga. Protect and Shell are recommended for Oversoul, as well as using high-powered attacks. Zantetsu has a chance of killing, but is not completely reliable when Oversouled. Stick to physical attacks and/or attacks such as Excalibur or other high powered attacks, and it will fall in no time.
In the Fiend Tale endings, a notable Hug Bug was looking for a mate and instead got three: Julie, Cindy and Rebekah. However, Hug Bug is eaten alive by his wives after breeding with them as they gave birth to his children three months later.