As Syndulla's second-in-command, the two came to develop a romantic relationship. After the Force-sensitive teenager Ezra Bridger joined the Spectres, Jarrus became his Jedi mentor despite still being a padawan. After defeating the Grand Inquisitor in combat, Jarrus and his fellow rebels learned they were part of a larger rebellion and joined Phoenix Squadron. During a mission to Malachor, Jarrus was blinded by the former Sith Lord Maul. After months of retreat, Jarrus restored his connection to the Force and repaired his frayed relationship with Bridger with the help of a mysterious being called Bendu, who taught him to see things through the Force.
The reinvigorated Jarrus and his fellow rebels would continue fighting various adversaries including Imperial Grand AdmiralThrawn and Maul, who sought to corrupt Bridger and destroy Obi-Wan Kenobi, the key to destroying the Sith. Regaining his confidence, Jarrus also taught the Mandalorian rebel Sabine Wren how to wield the Darksaber and helped her to rally the Mandalorians over to the rebel cause. As the Rebel Alliance escalated its struggle with the Empire, Kanan and his fellow rebels returned to free Lothal, a world which they had a special connection with.
Jarrus eventually met his death one year before the Battle of Yavin on Lothal, during the rescue of Hera Syndulla after Governor Arihnda Pryce ordered her walker to fire on the fuel pod they were on, sacrificing himself to allow his fellow rebels to escape. Sometime after Jarrus' death, Hera gave birth to their son whom she named Jacen.