shaowebb, you're just gonna gun for the cover in the event and then.. never use it? Why must you treat Sentry and Iron Fist like trophy husbandos?!
As of a recent patch, you can use it after the event ends and it will still work like it would if the event was still up.
They seem to be adding a new character with every successive PvE event now; which seems to be about bi-weekly.
5000 is the count for the number of players in your bracket.
Thank you!