Lost and the Damned 3 of 3: Tapeworm (ink on paper, 2022, converted miniature in the next image).
Nothing too complicated: a proud firstborn space marine, ready to prove his courage on every occasion. Then they came, the primaris. He was in the front line to join them, but the upgrade surgery didnʼt work well. He survived, but they told him something like “no no mr. Tapeworm, you stay as you were”. Tapeworm, full of grudge, disappeared during a raid (left for dead probably). Tapewormʼs purpose is basically to kill every primaris astartes on his way. Heʼll last probably a couple of months.