Hercules and Cyborg

 

Hercules was introduced in an MCU post credits scene, but when will we see him again?  There has been talk of a 5th Thor film, but I don't know if that is definite yet.  The next two Avengers movies are supposed to be jam packed with heroes, perhaps he will make an appearance in one of them.

Captain Hero and Power Man & Iron Fist

 

Jughead shouldn't be a stranger to dealing with Solomon Grundy since the undead mobster's sister teaches at Riverdale High, as depicted in STF #850.  Luke Cage has also run into the brute on a solo mission, as depicted in STF #1648. 

It's just been announced that the current season of Stargirl will be the final one.  Let's hope that we get one more Grundy appearance before the show wraps up.

Lex Luthor Vs. Power Man & Iron Fist

 

Since Shang-Chi and the Legend of the Ten Rings will center around a martial arts tournament, it seems like it would be a perfect place to feature a contestant from K'un Lun and introduce the world of Iron Fist to the MCU.  Alas, while there will be contestants culled from Marvel's library of characters, that does not seem to be the plan.  Hopefully it won't be too long before we find out how Danny Rand and Luke Cage will join in on the big screen super heroics.

Power Man and Afro Samurai

 My preference for a character's appearance is usually how I first encountered them, so I still have a great fondness for the classic chain belt and tiara look for Power Man.  That said, I can understand the need to update Luke Cage's appearance.  I'm glad Marvel at least still makes sure to usually put him in a yellow shirt, as a nod to the old days.