Level-headed and unflappably calm, Jedi Master Plo Koon is among the wisest in the Jedi Order. Deeply concerned for life of every form, Plo Koon is especially devoted to protecting the clones under his command. Master Plo shares a special bond with Ahsoka Tano for finding her as a baby.
While on a mission, Plo Koon discovered a Force-sensitive Togruta named Ahsoka Tano and brought her to the Jedi Temple for training. Affectionately nicknaming her "Little 'Soka", they maintained a close bond all through her training and apprenticeship under Anakin Skywalker.
Leading a fleet of Jedi cruisers, Plo Koon discovered the Separatist superweapon, the Malevolence. Using its massive dual ion cannons to disable the shields on the Republic ships, the fleet was easily destroyed, leaving Plo Koon and several troopers trapped in an escape pod.
Feeling that all life was to be treasured, Plo Koon developed a deep affinity for clone troopers under his command, acknowledging that their lives are more important than the completion of their missions.
As a general in the Grand Army of the Republic, Plo Koon regularly led fleets of Republic attack cruisers. On one mission his entire fleet of three cruisers was wiped out by the Separatist superweapon, the Malevolence.
Considered one of the wisest Jedi in the Order, Plo Koon was a member of the Jedi High Council from before the Battle of Naboo through the Clone Wars until his death at the hands of his own clone troopers acting on Order 66, which marked the Jedi as traitors of the Republic and called for their immediate execution.