Marvin was surprised about Blackhand appearing right after Saydis left.
Marvin didn't have a good enough understanding of the Nine Hells. How exactly did Diross become the Lord of the Scorched Hell?
That was still a mystery to him.
But this didn't stop him from accepting Blackhand's help.
Marvin judged that if Diross wanted Sodom's Blades, then few people in the Universe would be able to compete with him.
When Marvin summoned Blackhand before, he was still a middle ranked Devil Horseman, but now he was already a Greater Devil. This definitely was related to the Lord of the Scorched Hell supporting him.
It was a bit odd for Diross to dispatch Blackhand to help Marvin get Sodom's Blades, and after all that happened, Marvin tended to see hints of conspiracy and weirdness everywhere. But he still accepted Blackhand's aid.
That man was his grandfather, after all.
...
