Multi-Paul, Dupli-Kate’s brother, attacks Rex Splode in the belief that the latter caused his sister’s death. The fight only stopped when Dupli-Kate appeared and explained that she didn’t die after all – she hid her zero numbered copy someplace safe.
Invincible was holding back in this, I think given the chance he could easily kill Multi-Paul if he wanted to. After all, a brute from the Lizard League was able to kill all of Dupli-Kate’s copy faster than she could duplicate them.
From – Invincible #46