Bowlman is one of the tougher Undernet navi’s. Sadly most people don’t know this because of the anime. In the anime Bowlman’s portrayed as a weak comic relief navi. That has misled many. Bowlman wins.
Hatman has some magic powers that help him defeat other net navi’s. They won’t help him here, because he can beat Greenman without them. Greenman just can’t fight and maybe never will. Hatman wins.
Napalmman has a lot of firepower that could take out people by the dozens. While Greenman doesn’t have that fire power and probably never will he still has spirit. Of course that doesn’t really help. Napalmman wins.
Meddy has injections that can take out even the toughest man…in her dreams. While she’s pretty weak she can still crossfuse and inflict damage to people like Greenman. Meddy wins this round. Meddy wins.
Videoman has the powers of videos at his side. Greenman doesn’t really have anything on his side. Which is pretty sad for him. If you have no power than how can you possibly win? Videoman wins.
Topman can spin faster than Greenman on his bad day. Topman is a lot older than Greenman but that doesn’t stop him from being one of the tougher top navi’s. Greenman doesn’t have much of a future here. Topman wins.
Greenman is all well and good, but Kingman holds all the cards here. He has chess pieces that can take out people by the bucket load. Greenman is one of those people that would be taken out. Kingman wins.
Spikeman has lots of spikes that can probably damage Greenman permanently. Greenman does have some abilities but they were never explored and probably never will. Spikeman takes this round. Spikeman wins.
Searchman is surely a force to be reckoned with. He has a scope blaster that can shoot you from hundreds of miles away by opening a portal and shooting through it. In short there’s no escape for Greenman. Searchman wins.
Noodleman is a navi with noodles. He’s so powerful in noodles that he can use noodles to shapeshift. Pretty intense huh? Greenman doesn’t have anything cool like that. Maybe he should have not become a navi. Noodleman wins.