  Possible manifestations of accreting magnetars are discussed. It is shown
that the four ultra-luminous X-ray pulsars can be understood in the accreting
low magnetic field magnetar scenario. The NGC300 ULX1 pulsar may have a higher
dipole magnetic field than other sources. General constraint on their mass
accretion rate confirmed their super-Eddington nature. Lower limits on their
beaming factor are obtained. They do not seem to have strong beaming. The duty
cycle of the ULX burst state can also be constrained by their timing
observations. ULX pulsars may be in accretion equilibrium in the long run.
During the outburst, they will spin up, and run from the previous equilibrium
state to the new equilibrium state. It is proposed that the slowest puslation
X-ray pulsar AX J1910.7+0917 may be an accreting magnetar with a low mass
accretion rate. ULX pulsars, slow pulsation X-ray pulsars may all be accreting
magnetars with different accretion rates. Seven possible signatures of an
accreting magnetar are summarized.
