there are two parts to the intro , easiest way to play them at the same time is with two people

intro part A
E | – – – – – – – – – – – – – – – – – |
B | – – – – – – – – – – – – – – – – – |
D | – – – – – – – – – – 1 – 0 – – – – |
G | – – – – 2 – 3 – – – – – – 3 – – – |
A | – 3 – – – – – – – – – – – – – – – |
E | – – – – – – – – – – – – – – – – – |
( repeat x4 )

intro part B
E | – 8 – – – – 0 – – 1 – – 4 – – 8 – 9 – 8 |
B | – – – – – – – – – – – – – – – – – – – – – – – – |
D | – – – – – – – – – – – – – – – – – – – – – – – – |
G | – – – – – – – – – – – – – – – – – – – – – – – – |
A | – – – – – – – – – – – – – – – – – – – – – – – – |
E | – – – – – – – – – – – – – – – – – – – – – – – – |
( play twice after 2nd repetition of intro a on another guitar )

verse 1 :
Fm C
when criminals in this world appear and break the laws that they should fear
C7 Fm A#m
and frighten all who see or hear the cry goes out for far and near for

chorus :
Fm D#m Fm D#m
underdog ( underdog ) underdog ( underdog )
Fm G# Fm G#
speed of lighting , roar of thunder , fighting all who rob or plunder
C C7 Fm A#m Fm
underdog ( ooh ooh ooh ) underdog ( underdog )

this chord progression is repeated throughout the whole song , except the ending
which goes like this :

Fm G# Fm G#
now unleash the dog of wonder , tearing evil souls asunder
C C7 C# C#7
underdog ( bow – wow ) oh what a wonder – dog ( and how )
C C7 Fm A#m7 Fm
now heres the epilogue ( ooh ) underdog ( underdog )