Bernie is an unseen character, she has never appeared on screen.
Storylines
Bernie is an unseen character in EastEnders - first mentioned on 29th June 2015, Bernie is the current cell-mate of Dot Branning whilst she serves her 14 month sentence for manslaughter.
Bernie, who is in prison for arson, is described by Dot being lovely with a heart of gold but a mouth like a sewer.