Champion is a dystopian young adult novel and the third book in the Legend series written by American novelist Marie Lu.

[3] After the events of Prodigy, Daniel "Day" Altan Wing now lives as a free citizen in San Francisco with his younger brother, Eden Bataar.

Following several months of no communication, Day is contacted by June Iparis about a "feast" held by Anden Stavropoulos, the young Elector of the Republic.

Day denies the request and the Republic's cause is further eroded when traitor soldiers Thomas Bryant and Commander Jameson, both in death row for the attempted coup, and the murder of June's brother (Metias Iparis), escape.

While the population is being evacuated to Los Angeles, Day works with the Patriot organization to hijack the Colonies' airships.

He also reluctantly decides to let Eden become a test subject to find a cure for biological diseases spreading in the Colonies.

The President refuses, stating that the Republic was infested with disease and that he would aid Anden only if a cure was found along with several plots of land as payment.

After being in a coma for five months, Day wakes up, but has lost all memory of the events of the previous year and does not remember June.

Ten years after the invasion, June is about to have dinner with Tess when she hears Day and Eden are coming back.

As she dashes her hope to meet Day, June stumbles on him and Eden, realizing that Tess has made them reunite.

In Prodigy, Day broke up with June as he thought she shouldn't be with a dying man but they rekindle their relationship in Champion after almost a year of being apart.

Commander Natasha Jameson- An important antagonist in the series who is a murderer and attempted to kill Anden, Day and June.

[4] Commonsensemedia gave the work four stars, writing that "Action-packed sci-fi series reaches rousing conclusion.