?独断独行

... at law 通过法律手段 a law unto oneself 独断独行 law n.法律 ...

?独断专行

独断独行 a law unto oneself 独断专行 a law unto oneself 独放异彩 to perform brilliantly; to project singular splendor or radiance ..

?一意孤行者

... prove oneself a match for someone 可以胜过某人... above oneself 趾高气扬(兴高采烈)... a law unto oneself 一意孤行者 ...