What is "g'kar"

G'Kar is a fictional character, played by Andreas Katsulas, in the universe of the science fiction television series Babylon 5. He initially appears as a villainous diplomat opposite Londo Mollari, being constantly engaged in insidious, if petty and often comical schemes, usually driven by his hostility to his people's historical enemies, the Centauri, whom Londo represents. However, in the course of the series, he is transformed into a Messianic figure and the foremost spiritual leader of his people.