<P> The series is centered around the exploits of Billy ( voiced by Richard Steven Horvitz ) , a completely idiotic and happy - go - lucky boy ; Mandy ( Grey DeLisle ) , a cynical and merciless girl , and Grim ( Greg Eagles ) , the Grim Reaper who is often tormented by the duo . After cheating at a limbo match against Grim ( in retaliation for putting the limbo rod too low for them to go under ) , he is enslaved in a permanently unwanted friendship with the children . Grim is miserable in the first days of his servitude , and even fantasizes about killing them multiple times . However , as the time passes , he gradually adapts to the new life , and even grows to care for Billy and Mandy , if only somewhat . Despite this , he retains a love - hate relationship with the two and desires to eventually break free from his servitude . </P>
<P> The series is centered around the exploits of Billy ( voiced by Richard Steven Horvitz ) , a completely idiotic and happy - go - lucky boy ; Mandy ( Grey DeLisle ) , a cynical and merciless girl , and Grim ( Greg Eagles ) , the Grim Reaper who is often tormented by the duo . After cheating at a limbo match against Grim ( in retaliation for putting the limbo rod too low for them to go under ) , he is enslaved in a permanently unwanted friendship with the children . Grim is miserable in the first days of his servitude , and even fantasizes about killing them multiple times . However , as the time passes , he gradually adapts to the new life , and even grows to care for Billy and Mandy , if only somewhat . Despite this , he retains a love - hate relationship with the two and desires to eventually break free from his servitude . </P>
who plays the grim reaper in billy and mandy
who plays the grim reaper in billy and mandy
Greg Eagles
Greg Eagles