Judas WAS a partaker! He was there and Jesus handed Judas the bread. Matthew 26:20-29, Mark 14:17-25 and John 13:21-30.....especially verse 30.
30 He then having received the sop went immediately out: and it was night.
Each account is a description of the Lord's supper and the prediction of who would betray Jesus.
So was Judas anointed? or of the Great crowd?
Neither! Luke 22:3 "3 Then entered Satan into Judas surnamed Iscariot, being of the number of the twelve."
This was prior to the Lord's supper, but he still partook.