bianca: (370 mil left) batman (1)gotham (3)orion (2)king pin (1)lex luthor (1)martian manhunter (1)
nowhereman: (410 mil left)hal jordan (1)wolverine (1)ghost rider (2)lobo (2)blue beetle (2)black canary (2)
silver: (350 mil left)wonder woman (1)spider-man (1)captain america (1)barbara gordon (1)ironman (1)nightwing (1)
allan: (395 mil left)superman (1)captain atom (2)thanos (2)thor (1)quasar (2)venom (1)
as for 'access' - to my knowledge, he has no power of forced amalgamation, but rather, the mere ability to jump between worlds.
regardless, you are free to select him. and, for final ruling - no, he does not permit almagamated characters.
and bianca... silence, woman! i apologize for the mathematical error, but... look, i spelled 'mathematical' correct, so all is well in the world.
do you continue with your previous selection, currently "on hold"?
