Crossin' a friendly, or even neutral, encounter with Vespian and The Puppeteer would be nigh impossible. While The Puppeteer might be of slight curiosity, Vespian on the other hand wouldn't want anythin' to do with I so he'd probably end up chasin' me off (no way am I gonna get killed). He was never one to get along with others no matter whom or what they are. He just wants to be left alone for the rest of his days so my sudden intrusion would not sit well with him.
As for Rauven, he'd be wary of my approach and a connection could happen but I'd be a fool to trust that one. For all I know, what would begin as friendly pettin' would end up with he bitin' my hand or arm as hard as he could mid-stroke. He's a ratjaw, one who misguides others, so for the better, I'd keep away.
The only one I know I'd be able to approach without caution of gettin' harmed or slaughtered is Yusei. While he looks sinister, he really wouldn't be able to hurt a fly. Shy, he would be and given his backstory, it'd be a miracle for I to coax him out of hidin'. Probably wouldn't be able but if said miracle actually happened, he'd be makin' little Lutphen noises while I pet his mane and tie his ribbon firmly around his horns.