Taran Killam joins the Broadway cast of Hamilton as King George III January 17.

Killam, the former Saturday Night Live cast member who was seen as sadistic dentist Orin Scrivello in the 2015 City Center Encores! production of Little Shop of Horrors, replaces Rory O'Malley in the role of King George. O’Malley concluded his run January 15 and will star in the musical's forthcoming national tour. Killam tweeted a photo of himself in costume.

Among other upcoming cast changes, James Monroe Iglehart will take over the role of Jefferson/Lafayette at a date to be announced in April. Anthony Lee Medina will make his Broadway debut as John Laurens/Philip Hamilton at a date to be announced in March; he succeeds Jordan Fisher, who will play his final performance March 5. Medina was seen as Otto in the first national tour of Spring Awakening, Usnavi in In the Heights at Theater Under the Stars, and Young Sal in The Public Theater’s The Capeman.

Javier Muñoz currently stars as Alexander Hamilton on Broadway in a company that also features Brandon Victor Dixon as Aaron Burr.

O’Malley handed over his crown to Killam in a special ceremony on the stag of the Richard Rodgers Theatre January 15. Watch it here:

With book, music, and lyrics by Miranda, direction by Thomas Kail, choreography by Andy Blankenbuehler, music direction/orchestrations by Alex Lacamoire, Hamilton is based on Ron Chernow’s biography of Founding Father Alexander Hamilton. The musical won 11 2016 Tony Awards, including Best Musical, Score, Book of a Musical, Direction of a Musical, Choreography, and Orchestrations.

This is not Killam‘s first involvement in Hamilton. On January 2, 2016, he appeared on the steps of the Richard Rodgers Theatre as that week‘s guest for #Ham4Ham. Watch it here:

Read: The Hamilton Effect: 8 Unexpected (and Strange) Effects of the Smash Musical