Diamondmincatr (Misspelling of diamondminecart) is a character that appeared in "His Roblox girlfriend hated his rapping..." and was seen rapping against Albert and playing arcade games with s7398. One of his signature quotes is "we back is mine," his attempt at singing the lyric "So we back in the mine" from the Minecraft parody song Revenge. He also puts seemingly random emoticons in chat.
In the original video, he uses the Roundy head, Jade Necklace with Shell Pendant, Pal hair, Knights of Redcliff Paladin face, and I feel Bricky 2 pants. Currently he uses the Knights of Redcliff Paladin package with the Man face.
"we back is mine"
"thanks for say it"
"attack me aloof"
"AAAH. oof, i die my boys"