Bartholomew was a sentient male mouse.
Bartholomew was a drunk and one of Professor Ratigan's henchmen in 1897. As Ratigan was singing The World's Greatest Criminal Mind shortly before he made his move to rule the Mousedom, Bartholomew, drunk as a skunk, made a mistake with the lyrics and called Ratigan a rat. The evil mastermind, who hates being called a rat and has it strictly forbidden, quickly had poor Bartholomew fed to Felicia.
Bartholomew was short and plump and mostly wore dark red clothes. His fur was light brown, as was his tail, and he had a red nose (though that might be due to his drinking and not be natural).
- Bartholomew was voiced by Barrie Ingham, who also voices Basil of Baker Street.