Lloyd's father loved him very much since the day he was born. Lloyd idolized him and even dreamed of being just like his father by becoming a super villain, but his father didn't want his son to be like him, instead he wanted Lloyd to be his own person. When Lloyd finds out he was the Green Ninja, he was sad that he had to face his father and vice versa. When Garmadon was purified from evil, Lloyd was happy that he was finally reunited with his dad and the two used this as an opportunity to spend time with each other. When dealing with the Overlord, Garmadon came to his son's aid with no hesitation telling Pythor who brought up his oath that when he stole his son all promises were broken.
When Lloyd was about to go off to Chen's Island with his friends to find Zane, Garmadon tried to stop him but joined him on his journey. It was there that Lloyd learned some shocking details about his father's past namely Chen was his master and that his father signed a love letter that written by his uncle which caused his mother to fall in love with him. Lloyd later persuaded his father to tell Wu and Misako about his past after he admitted his fear of losing them after he got both of them back in his life. Lloyd was also sad that his father turned into Anacondrai but the latter told him he was on his side no matter what and Lloyd was quick to stop Jay from attacking Garmadon after he mistook him for Anacondrai cultist. Before the battle with Chen, Lloyd noticed Wu and Misako shunning Garmadon, asking if they knew about the letter as Garmadon sadly confirmed it. When fighting Chen's forces he was openly against the idea of having to banish his father to the Cursed Realm defeat Chen but relented and personally banished him to see him off though was sad at the outcome.
In Curseworld, Part II, Lloyd was reunited with his father while traversing the cursed realm and attempted to free him but to no avail. Lloyd was distraught when he realized that to defeat The Preeminent he'd have to sacrifice his father who told him no matter what he'll always be a part of him. After the defeat of the Preeminent, Lloyd returned from the Cursed Realm and stated his father was in a better place. On Day of the Departed, Lloyd and his mother pay their respects before Pythor attacked them and while fighting the Ancondrai, he realized that no matter what, Garmadon was always there for him.
Misako is Lloyd's mother. They care a lot about each other throughout the series. Originally Lloyd never met her when he was young but in season 2, when he was reunited with his mother he was initially hostile towards her for her supposed abandoning of him. But after finding out her reason was to protect him and save his father, he ultimately forgave her and the two became closer in future seasons.
In season 5, when Lloyd was possessed by Morro, Misako was desperate to get her son back stating she wasn't going to lose him as she lost her husband. After Lloyd was freed of his possession, Misako was happy to have her son back and consoled him after the defeat of the Preeminent which led to his father's demise.
While fighting Nadakhan, Lloyd was sad at the thought of his mother being one of the Djinn's victims. On the Day of the Departed, Lloyd and his mother pay their respect to Garmadon and Lloyd defended his mother from Pythor when he attacked them.
Master Wu is Lloyd's paternal uncle and Master. Lloyd and the other Ninja really cared about Master Wu and are glad to have Wu as their teacher. Wu look after Lloyd when he was little which showed that Wu really cared about his nephew. Lloyd always loved and respected Wu as his uncle and Master.
During Season 7, Lloyd and his friends came to Wu's aid when he fought Acronix and was distraught as Wu was wounded by the villain. In Scavengers, Lloyd was sad that may have failed his uncle when he needed help fighting Acronix, and Lloyd wanted to make sure he doesn't fail him again, so he look after him when he was injured and continue to work harder in his training to become a master. When Lloyd infiltrated the Time Twins' base, he went out of his way to save the captive Wu but lost him to the Vermillion. When Wu was lost in time with the Time Twins, the ninja made Lloyd their master and he said his first order as their master was to get rid of the time blade and find out where Wu was.
Kai and Lloyd are good friends throughout the series though Kai was jealous that Lloyd was picked as the green ninja instead of him but this did not hinder their friendship.
In Season 5, after Lloyd was possessed by Morro, Kai was the most determined out of all the Ninja to get his friend back, even going far as to give up the Realm Crystal and leapt into the water (despite his fear and inability to swim) to save Lloyd from drowning. He was relieved to have his friend back and comforted Lloyd when he was upset about dropping his guard by telling they would defeat any threat. Kai's words proved true as the ninja were able to save the city of Stiix defeat The Preeminent and her army of ghosts.
Jay and Lloyd are good friends throughout the series. They don't interact much, but as the series go on, they grew closer and showed that they really cared about each other. In Season 5, when Lloyd was possessed by Morro, Jay and other would do anything to rescue him from Morro's clutches. At the end of Season 7, Jay was the first ninja come to the decision to make Lloyd their master after Wu is lost in time with Time Twins.
Cole and Lloyd are good friends throughout the series. Whenever Lloyd feel down in some battles, Cole and the other Ninja support Lloyd. Throughout the series, they grow closer and showed that they really cared about each other. When Lloyd was possessed by Morro, Cole and the others would do anything to get their friend back from Morro's clutches. On the Day of the Departed, Lloyd and the other ninja were happy to see Cole become a human again.
Zane and Lloyd are good friends throughout the series. Lloyd and the other Ninja showed to really cared about Zane, they missed him when he sacrificed himself to defeat The Overlord. In Season 4, when the team broke up Lloyd attempted to bring them back together by enlisting a new member which was met with a negative response. However, this stopped when they found out Zane was still alive, they decided to go searching for him. Lloyd stated the decision was to find a member of his family to Garmadon who tried to stop from going to Chen's Island, another show of his care for Zane. After reuniting with Zane, Lloyd was happy to see his friend telling him it was good to have him back on the team.
In return, Zane also cares about Lloyd as well as when Lloyd was possessed by Morro, Zane and the other ninja did everything they could to rescue him from Morro. When Lloyd was released from Morro's grasp, they were elated to have their friend back and fought against the ghosts emerging victorious.
Nya and Lloyd are good friends throughout the series. They don't interact much, but as series they grew closer it is shown that they cared about each other. In Season 5, when Lloyd was possessed by Morro, Nya want to help save Lloyd from Morro's possession which caused her to train harder in becoming the Water ninja. Due to his possession, Lloyd did not see Nya become the Water ninja, but when Lloyd was freed he was happy to her as the new addition to the team. Nya was also relieved that Lloyd was freed from the ghost.
After his return to the team, Lloyd and Nya worked to stop Morro and his forces from taking over Stiix. Lloyd congratulates Nya when she unlock her True Potential and destroyed The Preeminent (even though she also destroyed his father along with it).