What is the name (nickname) of CT-5555, the clone who uncovers the inhibitor chip plot?

The story behind the answer

CT-5555 is the ARC trooper who uncovers the inhibitor chip conspiracy in The Clone Wars after Tup’s malfunction and Jedi Master Tiplar’s death. His nickname comes from the repeated digit in his designation. He investigates Kamino’s cover-up and nearly exposes the truth about Order 66 before being silenced on Coruscant, managing to warn Anakin and Captain Rex.

Don’t confuse him with Rex (CT-7567), the 501st’s captain who later removes his own chip; Echo (CT-1409), rescued from Separatist captivity and later joining Clone Force 99; or Jesse (CT-5597), the ARC with the Republic cog tattoo who tragically follows his chip during the Siege of Mandalore. This arc underscores how Palpatine weaponized the clones’ engineered loyalty, making one soldier’s persistence a near-save for the Jedi.