You cannot become a goblin on Runescape.
The only way is using a glitch and then you will be banned.
A goblin is an NPC - a non-player character, controlled by the computer. Other real players appear as white dots on the minimap, while NPCs (both monsters and NPCs which you can't fight against - such as the Lumbridge Guide and other tutors) appear as yellow dots.
get goblin mail (2) dye them blue and brown give them to the goblin general
get yellow and red dye, use them on each other, and use it on goblin mail
there is no imp village but there is goblin village.
Attack goblins or buy at grand exchange.
It is upstairs the tower in the goblin villlage, in a crate
Kill any goblin around Runescape, the Goblin Mail is a drop from them.
there is no goblin tower there are 1 town west of barbian village
No Humans can fit in a goblin mail, only goblins can
get goblin mail (2) dye them blue and brown give them to the goblin general
you kill a couple of goblins they willeventually give you a goblin armoursign:dragwolf56
For help on quests, try using the RuneScape Wiki
evrywhere especially in the goblin village
capes and goblin mail
You can't in Runescape--you can only fight them.
In the very back house of Goblin Village, search it on the map if you don't know where it is
get yellow and red dye, use them on each other, and use it on goblin mail
Kill goblins east of Lumbridge.