Paired unclued lights are an author and his eponymous characters. Crossing letters in 7D suggest the name in the title; solvers must correct this, entering the character’s real name by changing the contents of four cells, always making real words.

        Across

   1    A mob alas with disorder of gut (8)

11    I head into transport, and fit into attire (8,4)

14    Silly berk and his containers (7)

15    Table of bard essentially? (5)

16    Invested wager about Serbia’s banks (5)

17    Recover shower curtains say (6)

21    Keeper raced in clothing for soccer (6)

22    Woman’s caught current successor (4)

24    Struggles keeping new plants (5)

25    Foreign article...