The bulk update request #11622 has been approved by @evazion.
create alias thouzer -> souther
create alias thouther -> souther
In the later Hokuto no Ken media (especially translated version), Souther's name were romanized as "Thouzer" (or less commonly as "Thouther"), and some of the HNK fans have comes to knew him by this name. I think this should be aliased to his original name.