May the heavens reject me...

Death

Otoha is Johnny's partner in every sense of the word.
They met while they were both in the underwater city of Vatheon when Johnny returned from home bloodied and close to death. Otoha saved Johnny's life by feeding him and the human never lost his vamperic shadow.

They grew closer as Johnny wormed his way past Otoha's defenses and stoicism with his bright attitude and affection. Johnny wasn't always happiness and rainbows around him, though,Otoha was one of the few Johnny let see the broken core beneath the shiny exterior. More than once Johnny prompted that Otoha should kill him since he was a 'dangerous monster' and that was what Otoha fought against, but his last attempt at such prodding earned him a punch in the face from the other man.

His last bit of suicidal tendency was snapped out of him when Johnny allowed himself to be seriously and pointlessly injured causing Otoha to storm off out of frustration. When later confronted, Otoha told Johnny he was the one of the only people Otoha cared about and he didn't like Johnny throwing his life away like continuously tried to do. This caused the vampire to realize the depth of their attachment to each other and made Otoha promise that if he let Johnny care for him, he could care for Johnny.

Otoha vanished while Johnny was suffering from a bad breakup with his then-boyfriend and thought the man gone from his life forever until Johnny himself was teleported to Hinoto-ri as well. The two haven't left each other's sides since and, in fact, have only grown closer during their shared perils and happiness. After an event wherein Johnny (along with a large group of others) were all kidnapped to participate in an undeground fighting ring, Otoha finally admitted to his feelings for Johnny which the vampire was more than willing to admit to sharing.

Tower

Desco is Johnny's adopted niece. He met her through Otoha first, but quickly grew to adore her himself as she struck all of his parental chords.

Desco is not a normal child by any stretch of the imagination, but her eccentricities are one of the many things he loves about her. He might prefer she was a little less violent, but as long as he can keep her from human-killing sprees, he doesn't really question her choice of pastimes.

Johnny would do just about anything for Desco, from baking her whatever she asked for--no matter how elaborate-- to dying for her if the occasion called for it. Fortunately in the case of the latter, Desco is far stronger than even the True Blood is, so finding her in a situation where her life might be in actual danger is unlikely.
Simply put: Desco is the tentacle monster light of his life and he would like nothing more than to treat her like a princess for as long as he can.

Emperor

DeDeDe is, simply put, Johnny's boss.

After Otoha forbade Johnny from continuing his elicit 'Red Light District' job, Johnny looked elsewhere for employment--though not too far elsewhere. As it happened, DeDeDe intended to open a nightclub in the Taurus district and needed workers to run the place. With Johnny's previous bar experience along with his musical skill, the vampire was hired on immediately.

While it might run along a fairly newer line of experience for him, Johnny enjoys his work very much and is rather fond of DeDeDe, even if the penguin in question holds himself very aloof from most of his employees.

Strength

Johnny met Maugris when the other vampire made a broadcast somewhat subtly asking if there were any other vampires around. Johnny responded with the intention of scoping out Maugris' threat level. He was pleased to discover they were of a like-mind when it came to feeding on and killing humans.

Johnny offered to feed him, if only temporarily, until Maugris found a suitable substitute.

While differing in personality--Maugris being more quiet and subdued than Johnny--they share certain similair tastes and ideals that have endeared the other vampire to Johnny. They might not be attached at the hip, but Johnny wouldn't be against a few more social visits in the future.

Hierophant

Johnny and Ben's first and last meeting was a tumultuous one. They met in a cafe and began talking amicably. The friendliness quickly turned to open hostility, however, when they realized they had a connection through knowing Jacob--Johnny through his time in Vatheon and Ben from back home.

This conversation about Jacob is what led to Ben admitting to having murdered Jacob which sent Johnny into a grief-stricken rage. Johnny had only ever seen the good and fatherly side of the man in question whereas Ben had suffered through a life of trying to impress and appease the man who had never once directly spoken to him. They knew different sides to the same coin and so couldn't understand each other. The situation might have ended in bloodshed had Otoha not stopped Johnny from attacking Ben.