If you use Kullervo's Wrathful Advance with Gunblades it will often just ragdoll the enemies around and cause minimal damage.
Warframes tested: Limbo and Nezha
Gunblades tested: Stropha and Redeemer Prime
Some Mesa Prime Skins looks like are made from plaster when you toggle On the Prime Details and activate Mirage's Eclipse. I'm not sure if this also happens with other frames.