1 Nightwing and Oracle /Batgirl (BG) and Robin (DG)
I then like a lot of teamups with the Batfamily… Oracle and Black Canary, Batgirl (BG) and Supergirl, Robin (DW) and Superboy (JK), and Batman and Nightwing, etc.
In the DCU, I like Black Canary and Green Arrow, Mister Miracle and Big Barda, and I want to say Green Lantern and x, because Hal and the others have had lots of great team ups. Green Lantern and Green Arrow, Green Lantern and the Flash, Green Lantern and Green Lantern, etc.
Over at Marvel, I like various X-men team ups, but as far as duos go, I really like 1 Captain America and Falcon and 2 Cap and Agent 13.
Donna Troy and Dick Grayson
Jay Garrick and Alan Scott
Green Arrow and Green Lantern (Ollie and Hal or Connor and Kyle)
Flash (Wally) and Nightwing
Booster Gold and Blue Beetle
Impulse (Bart Allen) and Robin (Tim Drake)
Flash (Barry) and Green Lantern (Hal)
In no particular order
Mr. Miracle & Barda
Bouncing Boy & Duo Damsel
Green Arrow & Black Canary
Spider-Ham & anybody (cuz it’s freakin Spider-Ham)
Nightwing and Flamebird (the Power Girl and Supergirl version, inside Kandor)
Superman and Batman
Green Lantern and Green Arrow (Hal & Ollie)
Spider-Man and Daredevil
Booster Gold and Blue Beetle
Captain America and The Falcon
Black Canary and Green Arrow
The Thing and The Human Torch
Fire and Ice
The Beast and Wonder Man
Jimmy Olsen and Robin