A hot-stamped body comprising: a steel base metal; and a metallic layer formed on a surface of the steel base metal, wherein the metallic layer includes an interface layer and a principal layer, the interface layer contains, in mass%, Al: 30.0 to 36.0%, has a thickness of 100 nm to 5 μm, and is located in an interface between the metallic layer and the steel base metal, the principal layer includes coexisting MgZn 2 phases and insular FeAl 2 phases, has a thickness of 3 μm to 40 μm, and is located on the interface layer, an average composition of the metallic layer consists of, in mass%: Al: 20.0 to 45.0%; Fe: 10.0 to 45.0%; Mg: 2.0 to 10.0%; Sb: 0 to 0.5%; Pb: 0 to 0.5%; Cu: 0 to 1.0%; Sn: 0 to 1.0%; Ti: 0 to 1.0%; Ca: 0 to 3.0%; Sr: 0 to 0.5%; Cr: 0 to 1.0%; Ni: 0 to 1.0%; Mn: 0 to 1.0%; Si: 0 to 1.0%; and the balance: 12.0 to 45.0% of Zn and impurities, in the principal layer, the MgZn 2 phases each contain, in mass%: Mg: 13.0 to 20.0%. Zn: 70.0 to 87.0%; Al: 0 to 8.0%; and Fe: 0 to 5.0%, and in the principal layer, the FeAl 2 phases each contain, in mass%: Al: 40.0 to 55.0%; Fe: 40.0 to 55.0%; and Zn: 0 to 15.0%, and wherein the insular FeAl 2 phases are determined as described in the description. a steel base metal; and a metallic layer formed on a surface of the steel base metal, wherein the metallic layer includes an interface layer and a principal layer, the interface layer contains, in mass%, Al: 30.0 to 36.0%, has a thickness of 100 nm to 5 μm, and is located in an interface between the metallic layer and the steel base metal, the principal layer includes coexisting MgZn 2 phases and insular FeAl 2 phases, has a thickness of 3 μm to 40 μm, and is located on the interface layer, an average composition of the metallic layer consists of, in mass%: Al: 20.0 to 45.0%; Fe: 10.0 to 45.0%; Mg: 2.0 to 10.0%; Sb: 0 to 0.5%; Pb: 0 to 0.5%; Cu: 0 to 1.0%; Sn: 0 to 1.0%; Ti: 0 to 1.0%; Ca: 0 to 3.0%; Sr: 0 to 0.5%; Cr: 0 to 1.0%; Ni: 0 to 1.0%; Mn: 0 to 1.0%; Si: 0 to 1.0%; and the balance: 12.0 to 45.0% of Zn and impurities, in the principal layer, the MgZn 2 phases each contain, in mass%: Mg: 13.0 to 20.0%. Zn: 70.0 to 87.0%; Al: 0 to 8.0%; and Fe: 0 to 5.0%, and in the principal layer, the FeAl 2 phases each contain, in mass%: Al: 40.0 to 55.0%; Fe: 40.0 to 55.0%; and Zn: 0 to 15.0%, and wherein the insular FeAl 2 phases are determined as described in the description. Al: 20.0 to 45.0%; Fe: 10.0 to 45.0%; Mg: 2.0 to 10.0%; Sb: 0 to 0.5%; Pb: 0 to 0.5%; Cu: 0 to 1.0%; Sn: 0 to 1.0%; Ti: 0 to 1.0%; Ca: 0 to 3.0%; Sr: 0 to 0.5%; Cr: 0 to 1.0%; Ni: 0 to 1.0%; Mn: 0 to 1.0%; Si: 0 to 1.0%; and the balance: 12.0 to 45.0% of Zn and impurities, in the principal layer, the MgZn 2 phases each contain, in mass%: Mg: 13.0 to 20.0%. Zn: 70.0 to 87.0%; Al: 0 to 8.0%; and Fe: 0 to 5.0%, and in the principal layer, the FeAl 2 phases each contain, in mass%: Al: 40.0 to 55.0%; Fe: 40.0 to 55.0%; and Zn: 0 to 15.0%, and wherein the insular FeAl 2 phases are determined as described in the description. Mg: 13.0 to 20.0%. Zn: 70.0 to 87.0%; Al: 0 to 8.0%; and Fe: 0 to 5.0%, and in the principal layer, the FeAl 2 phases each contain, in mass%: Al: 40.0 to 55.0%; Fe: 40.0 to 55.0%; and Zn: 0 to 15.0%, and wherein the insular FeAl 2 phases are determined as described in the description. Al: 40.0 to 55.0%; Fe: 40.0 to 55.0%; and Zn: 0 to 15.0%, and wherein the insular FeAl 2 phases are determined as described in the description.