I am less than amazed...

After you defeat Dark Bowser, the game's over. Wherever you save before you fight him is where you'll end up after you beat the game. It's like that for alot of games involving a end boss.

Actually, you do need to impress him. If you collect all the attack items, and all of Bowser's minion attacks, plus your level for Bowser , Mario, and Luigi all exceed level 40, you'll get two extremely power objects. For M and L, you'll get a badge that pretty much automatically fills up the bro meter in one attack, and for bowser, you get an item that lets him attack twice in a row. Hang,in there and level up to 40, and you'll be able to play again with those new items. But you don't start over, you just get them and it saves.

I see your in a bit of a jam.Okay,here's the thing.Gold Boss and star rank are not that last rank,so this is why the Chakroad guy was not impressed.There is actually a final FINAL rank for Bowser,Mario,and Luigi.These ranks are called the final boss rank(bowser)and the rainbow rank(Mario and Luigi).These ranks you can access once you reach level 40.How do you do this after already defeating dark bowser you ask?Well remember what you said about clicking on your file and going back to a save block where you saved BEFORE defeating dark bowser,well what you want to do is go to the left or right side of the building(with bowser ,of course).You will then enter a room.Use bowser's spikeball move on the dirt walls to get to the bottom floor.Exit to your right or left,depending on which side of the building your on.Now go down.There,now you can defeat as many enemies as you want until you get to level 40!Oh,and don't forget about Mario and Luigi!You must level them up to.The quickest way to level them up is Peach's castle(Bowser)and Bowser's airway(Mario and Luigi).Once you have reached level 40 to all characters,go and defeat dark bowser(don't forget to save!).It'll only take about two turns before you've defeated them because you're so leveled up.After that...well I don't want to spoil the comment the Chakroad guy gives you,now do I?But after the Chakroad guy talks about your ranks,you will go back to the main menu.Click your file and...I can't tell you dude.But what I do have to say is don't worry about.You'll know and everybody that has witnessed you play will know.See ya!
-Girly556

That happened to me too. I THINK you have to get mario, luigi, and bowser to the final rank to amaze him. Im still working on this so im not sure.

No it just praises u, thats all.

Actually you have to get all 3 players level 40 for him not to say "I am less than amazed".I know this because I defeated DB mith the bros at lvl 40 but bowser lvl 30-39 and he said I am less than amazed.

Chakron says " you have grown well" with the bros over lvl 40 and bowser under lvl 40.
P.S Chakron (the third sage) is the chakroad guy the names match and he says to the bros that he flung a "large angry creature recently" (not a perfect quote)

You have to get the bros and bowser to level 40, then you win the final boss to win.