匪 fěi bandit
Made up of [匚 fāng basket radical 22, 非 fēi to not be; not; wrong radical 175]Made with 10 strokes.
Something that 'should not be' in a box
Related characters
Also uses 匚 fāng component: 匹 pǐ (bolt of cloth)
Also uses 非 fēi component: 啡 fēi (coffee)