Jannah I think Kasper would find Zeena super cool, especially if she's open about her Animagus ability. He would feel drawn to her upbeat, outgoing nature, and admires that she isn't taking the tournament extremely competitively, but rather is using it as an opportunity to meet a diverse array of friends. I can totally see the two of them blowing off class together to pursue more creative or adventurous endeavors. Although Kasper might initially be startled by Zeena's uninhibited tendencies to say exactly what's on her mind, since he's not one to readily reveal his thoughts or feelings.
Viserion Starting out, I think Kasper and Vikae would clash. He would feel repelled by her aggressive, competitive approach to life, thinking that she takes herself too seriously and that constantly striving to be the best will only lead to a lifetime of disappointment. Her extreme intensity might even intimidate him into avoiding her, though that's not to say he'll back down easily if they have a disagreement. Kasper isn't very big on logic and finds Vikae's ruthless usage of it overwhelming, believing that she should learn to think more with her heart and less with her head. However, if they're able to overcome their apparent differences, I could possibly see them bonding over piano and playing together sometime.
Yay! Then they must interact! Fortunately there will be plenty of opportunity. Also, I think we have at least one character for each school now. I was kind of aiming for that so there would be stuff to do at each stop of the tour.
And yes, she's fairly open about her animagus ability. Her school has a strong tradition of producing them(hence why I chose the ability). It kind of fits her personality and passions too.