Bernice Summerfield/Characters

Professor Bernice "Benny" Summerfield
Benny hails from the 26th century, established in the Whoniverse as a Space Opera setting. She was companion to the Seventh and (briefly) Eighth Doctors before spinning off into her own continuity.
 * Adventurer Archaeologist
 * Action Girl / Action Mom
 * Brainy Brunette
 * Bottle Fairy
 * Christmas Cake: Benny was in her thirties when she travelled with the Doctor.
 * Fan of the Past: Benny is an expert on, among other things, 20th century Earth.
 * Half Human Hybrid: her son, Peter
 * Parental Abandonment (dead mother and missing (presumed dead) father, both by the time she was 8)
 * Tomboyish Name - Think somebody likes these?
 * Triang Relations: Type 3 with Adrian and Jason in the earlier Big Finish books.
 * Well Excuse Me Princess

Peter Summerfield
Benny's son by Adrian Wall.
 * Cute Little Fangs
 * Does Not Know His Own Strength
 * Half Human Hybrid
 * Human Mom Nonhuman Dad
 * Super Strength: Peter is stronger than all but the most augmented humans by late childhood.
 * Unusual Ears: Artist Adrian Salmon drew baby Peter with floppy puppy ears, which were so adorable they stuck.

Irving "Brax" Braxiatel
Another Time Lord (strongly implied to be the Doctor's brother, in fact), he has an archive/museum/gallery of everything, which he keeps on a private planet. Used to be a neutral Mr. Exposition who'd send Bernice Summerfield off on adventures, but has been steadily getting more and more evil. First mentioned (sort of) in a throwaway line in the 1979 serial "City of Death".
 * The Chessmaster
 * Face Heel Turn:.
 * Future Me Scares Me (Apparently, his future self scares him a lot. )
 * Guile Hero
 * Mr. Exposition
 * Really Seven Hundred Years Old
 * Renaissance Man
 * Screw the Rules I Have Money
 * Timey Wimey Ball (The Gallifrey audios feature Braxiatel as a member of the High Council, prior to his leaving Gallifrey, but also feature President Romana. Romana becomes President at some point after her return to Gallifrey in Blood Harvest, which is two novels after Theatre of War, which introduces Irving Braxiatel, eccentric collector).
 * Xanatos Gambit: Although it does blow up in his face a couple of times...

Jason Kane
Temporally-displaced former teenage runaway and intermittent street hustler; briefly and acrimoniously married to Bernice Summerfield, although all installments after their divorce make a point of showing that Aw Look They Really Do Love Each Other.
 * Abusive Parents
 * Anything That Moves: No. Really. ANYTHING.
 * Boldly Coming
 * Dead Little Sister
 * The Runaway
 * Slap Slap Kiss: With Benny
 * Slap Slap Kiss: With Benny

Adrian Wall
Adrian is a Killoran: a seven-foot-tall alien that looks like a wolf/ape hybrid. He's head of construction at the Braxiatel Collection.
 * Mars Needs Women: Adrian likes human women.
 * Papa Wolf: For Peter
 * Petting Zoo People
 * Punny Name: He thought 'Hadrian's Wall' was a real earth name. To make it worse, he's a builder.

Bev Tarrant

 * Action Girl
 * Classy Cat Burglar
 * Mysterious Past
 * Put On a Bus:
 * Vitriolic Best Buds: With Benny
 * Vitriolic Best Buds: With Benny

Joseph
Benny's pocket organizer.
 * Deadpan Snarker
 * Robot Buddy