Who is SATYAKI??

Yuyudhana better known as  Satyaki was devoted to Lord Krishna and was a student of Arjuna.During the Kurukshetra war, Satyaki is the commander of one akshauhini of the Pandava army.Satyaki strongly and passionately favored the cause of the Pandavas over the Kauravas in the Kurukshetra War, despite the fact that the Vrishini army had been promised to Duryodhana by Krishna. Satyaki accompanied Krishna to the Kuru capital, with Krishna as the emissary of peace which was ridiculed and turned down by Duryodhana.

                      Krishna as envoy to the Kaurava court before Kurukshetra war. Satyaki takes out his sword when the Kauravas, raise their sword against Krishna, while Krishna holds his hand