Throughout Boba Fett's career in both the Star Wars Legends continuity and the new Disney canon of Star Wars, the bounty hunter has been characterized with a desire to honor the legacy of his father; Jango Fett, turning to the Bounty Hunter life to make his father proud and make use of the training his father had imparted onto him. However, in the 2010 Dark Horse comic miniseries Star Wars: Blood Ties (by Tom Taylor, Chris Scalf and Randy Stradley), Boba uncovered a startling revelation that he might not be the only son of Jango Fett trying to make his dead father proud.
During the events of the miniseries Star Wars: Blood Ties, it was revealed that half of Jango Fett's inheritance had been given to an individual known as Connor Freeman, a man who had a bounty placed on him by a crime lord for allegedly cheating in a game of Sabacc. This revelation that he may have a brother sparked Boba Fett to go on a mission to find this mysterious individual and uncover what his relationship was to his father Jango, for despite being a cold and merciless killer, the notion that he shared a kinship with another young man was enough to entice the bounty hunter.
Boba Fett would track down Connor Freeman to the moon of Nar Shaddaa after learning of his existence from his banker at the end of Star Wars: Blood Ties #1 where he found the man fighting off a union of Bounty Hunters. Fett incapacitated Connor before the bounty hunter group could successfully capture their target. The group's leader was furious that Fett had poached their quarry from them and ordered his crew to kill Boba Fett. However, this would prove disastrous as Boba's Mandalorian training and immense arsenal of weapons was too much for the group. Boba was able to successfully leave Nar Shaddaa with his potential relative in his custody.
With Freeman in captivity, Boba probed him for information on why his father left this seemingly random individual a massive inheritance. Freeman revealed to Boba that although Boba shared the same face as his father, his father was not in fact Jango Fett, but in actuality a Clone Trooper deserter who escaped the Cloning Facility on Kamino years before the Clone Army was revealed to the galaxy in the 2002 film Star Wars: Episode II - Attack of the Clones. Jango had been tasked by Count Dooku to kill the rogue Clone Trooper who had taken up the alias 'Freeman', but when Jango finally found and killed his target, he had discovered that the clone had conceived a son. Knowing what it was like to grow up as an orphan, Jango was rattled with guilt and had the Banking Clan organization provide an inheritance from Jango to the clone's son, under the pretense that the inheritance was from Connor's real father.
This discovery was met with anger as Connor proceeded to chastise Boba for idolizing a heartless killer like Jango and that like Connor, Boba was not even Jango's real son, debasing Boba's relationship with his father as him simply being a clone that Jango adopted because he was lonely. A fight broke out between the two men which was interrupted by the reappearance of the League of Bounty Hunters who took advantage of Boba Fett's distraction to blast him from their starship and take back Connor Freeman to deliver him to the crime lord Tayand.
Unfortunately for the surviving members of the League of Bounty Hunter's, Boba had survived his wound and tracked down the League in Star Wars: Blood Ties #4, swooping down at them with his jetpack and stealing Connor back. Still bitter from their last encounter, Boba had now resolved to deliver Connor to Tayand himself and collect the modest bounty for his capture. But before he did Connor revealed to Boba that the reason Tayand has put a bounty on his head was because he wanted to make the inheritance he thought came from his father larger. He then told Boba that he actually won the game of Sabacc against Tayand, but out of pettiness the crimelord accused Connor of cheating and placed a bounty for him.
Seeing that Connor in his own way was trying to honor his father much like Boba was, Boba attempted to reason with Tayand when the bounty hunter brought Connor before the galactic kingpin, offering to pay the half-a-million credit debt that Connor unfairly owed Tayand. Only interested in vengeance however, the crime lord refused the bounty hunter's offer, leading Connor to make his own offer, telling Boba he'd pay him his last three credits to kill Tayand and allow him to escape. To the surprise of Tayand and all his associates, Boba Fett accepted Connor's humble bounty and a firefight ensued between Boba and Tayand's bodyguards, with Boba decisively defeating his opponents.
After the fight, Connor paid Boba as promised and reclaimed his lost inheritance. In the end, the pair can take solace that they have reclaimed their father's legacy, as regardless of their differences, both Boba and Connor wanted to "make a dead man proud." Connor would eventually repay Boba Fett for saving his life in the 2012 sequel miniseries; Star Wars: Blood Ties - Boba Fett is Dead (by Tom Taylor, Chris Scalf and Randy Stradley) when he defended Boba Fett's ex-wife and daughter from a group of Mandalorian Protectorates under the command of Governor Purton.
Purton wanted to punish Boba after he murdered his son for harming his ex-wife and so staged an Imperial Commando unit to kill Boba Fett while he killed the bounty hunter's family. Donning a suit of Mandalorian armor, Connor fought and killed Governor Purton, gaining the respect of Boba, whom now considered Connor his brother-in-arms.
The introduction of Connor Freeman within the Star Wars Legends continuity allowed Star Wars: Blood Ties lead writer; Tom Taylor to do an exceptional job to humanize the usually cold and emotionless Boba Fett a decade before the Disney+ series; The Book of Boba Fett attempted to. Tom Taylor showed Boba as a man of honor despite his line of work as a bounty hunter and his relationship with Connor Freeman showed a much softer side to the Mandalorian Foundling that allowed readers to sympathize with Boba and his odd relationship with his adopted father.