What themes are Mr. Wickham from Pride and Prejudice involved in?

Themes, as far as the different stories within the novel
are plenty:

He was once involved with Georgiana Darcy, the
younger sister of Mr. Darcy, and enticed her to elope with him just for the sake of
getting back on Mr. Darcy, whom he despised.

Then, he tried
to get engage to Ms. King, who was a rich heiress and whom he did not love, only to get
her money. When she realized he was a nobody, they broke
up.

After that, he did the rounds on Elizabeth, telling her
his sad story about how Mr. Darcy and he had grown up together and that Darcy was
jealous of him and sent him to ruin. The reality was different, since Darcy had offered
Wickham a job as a clergyman but, instead, Wickham took his share of the inheritance
once Darcy's dad died, spent it all, and came back for more only to be sent
away.

The worst one was when he befriended Elizabeth's
sister, Lydia, who was but 15 years old and dumb enough to actually be dazzled by
Wickham's uniform. When she eloped with him, she thought he would marry her, but he was
not planning on it. After Darcy intervened, paid a dowry and made Wickham marry Lydia,
was when the reputation of the Bennet sisters was saved.

In
the end, he was bold enough to still call Elizabeth "sister" afte he returned with Lydia
for the post-wedding reception, and saw in Elizabeth's eyes that she was very clear of
the type of scum he was.