Cu Chulainn Alter (Fate) in his Third Ascension outfit from Fate/Grand Order. While his Second Ascension adds red fur trim around his shoulders, wrists and ankles, this Ascension includes a tattered black cape and additional spikes on his body. Gae Bolg (Fate) also becomes noticeably spikier along the pole and near the blade.
Due to the similarities between this and his Second Ascension, it may be difficult at times to tell which one he is in. If that happens, do not use this tag.