Mrs Bennet

Elizabeth's foolish and greedy mother who is obsessed with finding suitable husbands for her five daughters, none of which can inherit the estate when Mr Bennet dies. Hence, she is crazy and obsessed with finding wealthy husbands for her pretty daughters, no matter how. It's pretty much the plot of Pride and Prejudice.
 Mrs Bennet is portrayed as superficial in her understanding, trivial in her interests and mistaken in her judgements throughout the whole novel. Also she is considered to be really narrow-minded and her manners shock Mr Darcy and embarrass Jane and Elizabeth.
 Lydia, the youngest of the sisters, is her favourite daughter, but later on she is totally blind at Lydia's marriage with Wickham, whose behaviour includes seducing young girls and then running away from debts.
Whereas we can laugh with Mr Bennet, we laugh at Mrs Bennet. Her character is an extreme caricature of the 19th century mother: pushy, demanding, talkative, and ambitious for her daughters.