Is there an alternate way to obtain legendaries in MD1?

[Jonouchi]

For example, I KOed Ho-oh earlier on my second go.

Is there a way to face him again or is he gone for good.

I want to get to Western Cave and I don't want to restart my game just to get there.

 

[Mewmie the shiny Mew]

You can go back to get them.
;151;

 

[suicune_dancer]

You can re-face all legendaries until you recruit them.

 

[Asarath365]

^yup thats all true^