Walker vs. Tyrant
The death god, Walker
http://www.marvunapp.com/Appendix/walkermarvel.htm
vs.
Depowered Tyrant
http://www.marvunapp.com/Appendix2/tyrantgalactus.htm
They fight in space. Tyrant's fortess is within distance, but has no minions present. Likewise, Walker's bone ship is in close proximity. Both may be used as befits the characters. No BFR, including by dimensional means.