Mr. Headache's Underground #1(1998)Mr. Headache's Underground #2(1998)Mr. Headache's Underground #3(1998)Mr. Headache's Underground #4(1998)Mr. Headache's Underground #5(1998)Mr. Headache's Underground #6(1998)Mr. Headache's Underground #7(1998)Mr. Headache's Underground #8(1998)Mr. Headache's Underground #9(1998)Mr. Headache's Underground #10(1999)Mr. Headache's Underground #11(1999)Mr. Headache's Underground #12(1999)Mr. Headache's Underground #13(1999)Mr. Headache's Underground #14(1999)Mr. Headache's Underground #15(1999)Mr. Headache's Underground #16(1999)Mr. Headache's Underground #17(1999)Mr. Headache's Underground #18(1999)Mr. Headache's Underground #19(1999)Mr. Headache's Underground #20(1999)Mr. Headache's Underground #21(1999)Mr. Headache's Underground #22(1999)Mr. Headache's Underground #23(2000)Mr. Headache's Underground #24(2000)Mr. Headache's Underground #25(2001)Mr. Headache's Underground #26(2001)Mr. Headache's Underground #27(2001)