No one liked Sonic (Boom). Sega is somewhat relevant.
Pac-Man is cool but only relevant for first game+being a manifestation of games. His stage "Pac-Land" is interesting, but mediocre/annoying. Namco is Mostly relevant.
Rockman is great, was great, and sadly, can only persist in being remembered great as long as his company shuns his franchise's existence and offers little in the way of new content. Capcom is mostly relevant.
Metal Gear is a wonderful piece of art, technology and meta storytelling, but is stifled by the shitty company it is sponsored by, as are other Konami IP's such as Gradius, YuGiOh, various Mechamusume stuff, etc. Konami is relevant for being infamous and godawful.