Krillin/History

Krillin was there when Orion arrived on Earth, he offered her to stay with him at Kame House, he warns Master Roshi to not try anything and he scolds him as well. Krillin is very kind to Orion and is willing to extend a hand, during the battle with the Androids he meets with her and Android 16 he greets her and Android 18 asked him of his "relationship" with Orion and he denies having any ties with her. This led to them defeating Cell, and Krillin teasing Orion of her relationship with Android 16 but she shut the shit down. 
Krillin eventually married Android 18 and had Marron, he attended Orion and Android 16's wedding.