Vine took part in training Team RWBY during their time in Atlas and went on mission together with them. He had shown himself to be, along with Marrow Amin, the ones in the Ace Operatives most fond of the team, being reluctant to fight Team RWBY and even begging for them to peacefully surrender instead as well as offering Blake and Yang chances to come willingly and unhurt. He continued to show fondness towards them even as the situation got more dire, attempting to resolve matters peacefully before their second fight.
Vine took part in training the members of Team JNPR, particularly Lei Ren, Jaune Arc and Nora Valkyrie in combat during their time in Atlas.
Clover was Vine's leader. Although their exact relationship was unknown, Vine followed his orders during missions and trusted him with his back when in dangerous situations. However given the Ace-Op's general view of each other as colleagues rather than friends, it's likely that he never grew that emotionally attached to Clover personally.
After his death, Vine, alongside his other teammates, went to look at Clover's body and bid his former leader farewell in "Divide".
In "Worthy", Vine began to believe that Clover may have been mistaken about having absolute loyalty to Ironwood.
Elm was Vine's teammate. He and Elm had a casual relationship and they got along very well. In "With Friends Like These" Vine served as a voice of reason when he and Elm fought Yang Xiao Long and Blake Belladonna, offering the Huntresses to stop the fight peacefully. Elm was angered at this, telling him she wants them to pay for betraying their trust. Elm later told him to stop "going easy on them", which Vine saw as Elm's attempt to convince herself of what she's saying.
In "Ultimatum", Vine tried to comfort Elm after Monstra is destroyed, but she gave him the cold shoulder.
Later in "The Final Word", Vine and Elm work together to stop Harriet from bombing mantle. After the bomb is armed and Vine plans to sacrifice himself to save the others, he and Elm look at each other one last time before she is forced to watch him die. She is shown to have been torn up over Vine's death.
Harriet was Vine's teammate.
In "Risk" Vine agreed with Harriet about bombing Mantle to bring Penny back to their side and open the Vault.
In "Worthy", when Harriet sough to finish what Ironwood started by bombing Mantle, Vine intervened, telling her he no longer sees it as a logical choice and that he also knows Harriet truly cared for Clover.
In "The Final Word", Vine attempts to stop Harriet from going though with bombing Mantle with Elm's help. After they succeed and the bomb is armed anyway, Vine decides to sacrifice himself to save his friends. Harriet is devastated by this as she is forced to watch Vine die.
Marrow was Vine's teammate, though they didn't interact much within the series, yet Vine joined Elm and Harriet in teasing their teammate after the mission in the Schnee Dust Company Mine 2.
Much later, in "Risk," Vine tried to calm Marrow after he spoke out against Ironwood's ultimatum, saying if it makes Ruby's Group agree to their terms, then it's worth it. He wasn't able to keep much of his composure when he witnessed Marrow come a split second from execution before being detained by Winter instead.
In "Creation" Marrow uses his Semblance to detain Vine and the other remaining Ace-Ops. In "The Final Word" however, Marrow mourns Vine's death.
Vine was selected by General Ironwood to join the Ace Operatives after acknowledging his skills and abilities as the best in Atlas. Ironwood would later entrust to him the information about Salem, Ozpin and the Relics along with the rest of the Ace Ops and brought him into the fold as his personal group.
Vine in turn, like his teammates, was loyal to the General and followed his orders without question, as seen where he agreed with his plan to abandon Mantle in favor of saving who they can in Atlas and later followed his orders to forcibly detain and arrest Team RWBY despite having grown close to them during their stay in Atlas.
As seen in "Divide", Vine seemed to be perhaps the most loyal of the Ace-Ops to the General, as seen where he did not flinch or show any other expression except calmness after Ironwood shot and killed Councilman Sleet, implying that Vine agreed with the General it was for the greater good and had no qualms with it, unlike a majority of his teammates who showed horror and shock at Ironwood's actions.
In "Risk", after Ironwood's announcement about nuking Mantle if Penny doesn't return to Atlas, he was left unnerved with how ruthless Ironwood was becoming but at first believes he was simply bluffing. When he learns Ironwood wasn't and he was willing to endanger Mantle citizen's lives, he became clearly more uneasy but still believed that it could successfully make Ruby and the others come out of hiding and ultimately be worth it. Though he became even more unnerved after Ironwood passed him by, having come a split second from executing Marrow for denouncing him and his threat towards Mantle.
In "Worthy", when Vine learned that Ironwood has been deposed, he no longer saw the need to follow his orders, and thus began acting as he saw was logical and just.
Winter and Vine were both colleagues within the Atlas Military and worked together under Ironwood.
After Clover's death and Winter's assignment as the Ace-Op's new leader, Vine was shown to have a working relationship with Winter and followed her orders while on missions.