activist
actor
agent
author
ball of fire
beaver
big-time operator
bustler
busy bee
committer
eager beaver
enthusiast
facient
factor
go-getter
human dynamo
hustler
live wire
maker
man of action
man of deeds
militant
new broom
operator
performer
perpetrator
political activist
powerhouse
take-charge guy
wheeler-dealer
winner
individual
mortal
person
somebody
someone
soul
animator
demon
energiser
energizer
fireball
sharpie
sharpy
vitaliser
vitalizer
whiz-kid
whizz-kid
achiever
enjoyer
instigator
knower
mover
perpetration
Darfur
Pasteur
grandeur
poor
poore
raconteur
ure
voyeur