Isaac thinks of Helios as someone of use. After all, he got the Mirage Ring from him, haha, and suspects he can acquire more things, whether it's items or knowledge. The best part is that Helios is simply just too nice and meek to really say, NO DAMMIT. Isaac is kind of neutral towards him at this point. He finds his nervousness amusing at times and mildly annoying at others, but hasn't really any strong feelings.