Do Kraven’s abilities persist if he is dazed or ko’d?

[Hugotheargonaut]

If expert tracker and corner the beast are used during Kraven’s activation, do they stay in play if he is dazed or KO’d later in the round?

Also, can these abilities only target one character per round, or can they be used multiple times? The card doesn’t specify, but as there is only one token for each, I assume only one character can be affected by each ability.

[Negoldar]

The effects of Corner the Beast and Expert Tracker last until they say they expire. 

Both special rules can be used as many times as you can pay for them during an activation. 

[Hugotheargonaut]

Thank you!