| O LOBO |
A bandit in the jungles of Brazil. When the Famous Five spent a holiday in that country, O Lobo made several attempts to discover the wherabouts of Peter Valentine’s diamond find. He was eventually killed by crocodiles.
1461 |
| O NO |
An agent of the Mandarin Tang Wang who was put in charge of the imprisoned juniors. When they escaped, he was facing death from Tang Wang, so he struck first and killed the Mandarin.
1185 |
| O'DONNEL |
A Rylcombe Grammar schoolboy
118 |
| O'MANT, Hedley |
A good young winger in the Harley College team that played the Remove at football.
353 |
| O'NEIL, Barney |
A Courtfield School schoolboy and a good friend of Dick Trumper.
146 |
| O'REILLY |
A Greyfriars schoolboy in the Remove. Probably a mistake by a sub-writer who got mixed up with Desmond.
1014 |
| O'ROURKE, Tom |
A Greyfriars schoolboy in the Third Form.
604 |
| OAKSHOTT, Captain James |
A gambler who attached himself to Ponsonby & Co when they stayed at Monson’s house. He robbed Monson’s father but was captured by the Famous Five.
1648 |
| OAKWOOD, Sir Giles |
An uncle of Gilbert Tracey and an old friend of Colonel Wharton, with whom he is a near neighbour at Oakwood Place. In order to control his nephew he sent Gilbert to Greyfriars.
1599 |
| OGILVY, Robert Donald |
A Greyfriars schoolboy in the Remove. A Scottish boy, the youngest of 7 brothers. All of his elder brothers are in the armed forces. He shares study 3 with Russell.
43 |
| OGILVY, Captain Malcolm |
One of Ogilvy's 6 brothers in uniform. He visited the school and was able to assist his brother in proving his innocence when accused by Loder of theft.
534 |
| OGILVY, Mr. Roland |
One of Ogilvy's 6 brothers in uniform.
524 |
| OKE, Mr. Dave |
A fisherman with a wooden leg, and caretaker of Blackrock Island in Devon, where the Famous Five spent an Easter holiday.
1626 |
| OKITO, Hiraka |
A Greyfriars schoolboy in the Remove. A Japanese and an expert in Ju-Jitsu. He was being used by a Japanese gang to squeeze through narrow openings to burgle places. When trying to break into The Head's study, the gang was captured by the police.
778 |
| ORRIS, Mr. James |
A valet to Mauly and a compulsive gambler. He held Mauly captive to force him to pay off his gambling debts. Orris was arrested when the truth was discovered by Bunter.
1245 |
| OSBORNE |
A Greyfriars schoolboy in the Remove.
12 |
| OSBORNE, Hubert |
The previous name of Frank Cleveland.
279 |
| OSMAN |
One of a family of donkey boys in Cairo. Their scam was to sell a donkey to an unsuspecting tourist and then the donkey would run away, back to the gang.
1281 |
| OTTO, Prince |
Prince Otto was travelling to England for the Coronation of King George V when his ship was wrecked in Pegg Bay. Wharton swam to his rescue and was rewarded by an audience with the King.
175 |
| OWEN |
A Greyfriars schoolboy in the Remove.
2 |
| OWEN |
A St Jim’s schoolboy in the Fourth Form.
340 |