Lockon Stratos
A leader and friend
Out of all the Meisters, Lockon is the one who is closest to Allelujah. Though that isn’t saying much, considering they all mostly keep to themselves. But out of the few instances that we see Allelujah relaxing with others, we find him with Lockon. They seem to have some kind of mutual understanding, something that is lacking between Allelujah and Setsuna or Tieria.
I’d like to think Allelujah and Lockon are fairly friend with one another when they are off duty. Perhaps chatting about innocent subjects (so as to not give away their past) and eating lunch together. The few times they interact, their atmosphere gives off the feeling they would spend quiet time together.
As for on duty, Allelujah and Lockon have been paired up on missions, Allelujah often playing carrier while Lockon does the sniping in air. When there is turbulence, Lockon’s reaction and Allelujah’s replies further imply they are on good terms with each other. They never argue or have tense conversations, it’s always casual or light with humor.
As with the others, when Lockon died in episode 23, Allelujah showed shock and sorrow. But being usually composed with his emotions, he did not react as violently or as vocally as the other Meisters.