While Krillin may not have the best track record for fighting in the Dragon Ball franchise, he managed to find successful romance and a healthy family life that eluded several of his Z Fighter comrades. While Yamcha and Tien were still flying solo going into Dragon Ball Z, Krillin turned out to be a much better and more attentive husband/father than series protagonist Goku. At the same time, these matters of the heart were somewhat questionable given the name of Krillin and Android 18's daughter.
Source：https://www.cbr.com/dragon-ball-krillin-marron-daughter-name-origin/
