Dante of Devil May Cry has been acknowledged to be partly designed after Cobra. He owns a poster of a woman named "Dominique" and nicknames a female demon slayer as "Lady" in the third game.
Mega Man was meant to shoot projectiles out of his palm until Kenji Inafune designed an Arm Cannonsimilar to the Psychogun for him instead. The Sniper Joe enemies also wield cannons that pretty much are just cartoony Psychoguns, down to the little details.
Metroid is thought to have borrowed a lot from Cobra for its scifi setting: a blond female bounty hunter clad in armor with an Arm Cannon cooperating with the Space Police against space pirates. The titular creatures' larval stage is also suspiciously similar to the energy-sucking Mermaid jellyfish monster that appears in Cobra's Rugball arc. Then in Metroid Fusion, we learn Samus was nicknamed "Lady" by her late commanding officer.
is inexplicably labelled as "Space Adventure Cobra".