This card reads, ‘This Digimon is unblockable.’ What exactly does that mean?
In response to this Digimon attack, an opponent’s Digimon cannot redirect this Digimon's attack when activating the <Blocker> effect.
Can my opponent still suspend their Digimon with <Blocker>?
Yes, the Digimon can still be suspended but the attack will not be redirected.