They then appeared in "Masks" serving Slade along with Robot Commandos. They attacked Robin (as Red X) and the other titans in large numbers, but were presumably destroyed.
Their next appearance was in "Aftershock - Part 2", Blockers appeared in vast numbers as they patrolled all over Jump City once Slade and Terra took it over. They swarmed all over the Titans, but thanks to Robin's explosives, they were finally dealt with.
They also appeared in "Deception" when Cyborg (as Stone) infiltrated the H.I.V.E. Academy. During a training, Cyborg, Gizmo, Jinx, and Mammoth destroyed some of them.