You get to Netfrica and go west. Then you should be in Sharo. Use your C-Slider to slide though the line and you should be in the Undernet.
The red key in Megaman Blue Moon can be found in the square with the four horns around it. You have to go to the left side of the map and go up the path to the warp to Undernet.
Simply click on the barrier cube and then walk to the scientist in sharo labs. he'll let you through.
In Undernet 3, where you fought Flamman. And it looks like he's a familiar face . . .
You need to get/have the C-Slider. Once you get that, you need to get to Netfrica Area and go in directions that lead you west. Once you get to the TOP west, there should be a blue entrance arrow. Go in there and you should be in Sharo Area. Go through all the moving sidewalk arrows and there should be another entrance. Once you get there, you should be in the UNDERNET.
no you cant
you can find flameman in undernet three where four pots with fire on them are placed.
There are 12 flames.
you have to find searchman in undernet and save him
In undernet 6
you can't. Dark aura can only be gotten in megaman battle network 3 BLUE. You get it by doing all the time trials in secret net. In WHITE, you get the Serenade chip.
Chip traders OR from volcano family viruses in the Undernet and Secret Areas that you S rank in Custom style with standard chips.
In Megaman Battle Network 6, It doesn't have The Undernet 3, but it has Undernet Zero where you can fight Bass at there.