Sir Basil Edward Basil is a sentient, magical rat the two Annabelle's manage to teach to sing and speak. He is the once-favourite pet of Queen Victoria who now swings between both realities as he pleases, through magical rat tunnels he has spent centuries digging with his fellows. He is highly chivalrous, upbeat and optimistic, and owes a great debt to the Annabelle's, who saved him from certain death via cats and mousetraps. He is perhaps reminiscent of Narnia's Reepicheep. He speaks very quickly and with a lot of character, and sometimes it's virtually impossible to get him to stop talking at all. He  often speaks in third person, referring to himself as Basil-Basil - he's very fond of 'name's so nice, you say it twice.'

Voice notes:

Pitch - medium-high (but not too high!)

Accent - either London Cockney OR London RP (posh, essentially)

I love the idea of him either being unbearably Mary-Poppins-Cockney or outrageously rich and royal - or perhaps he's able to swing between the two for comedic effect