Hassel in Pokémon Masters

Like most other sync pairs, a little introductory story becomes available after scouting Hassel & Baxcalibur as a sync pair. The player meets Hassel and they discuss about Baxcalibur helping with Hassel's teaching. Hassel tells the player how Baxcalibur has been his partner for a long time (while moving to tears), and encouraged them to come to his class the next time they feel lost and unsure where to go next.

The event that released alongside Hassel and Brassius's additions into the whole game. It focuses on Kris's struggles to finish a drawning in Hassel's art class, and Hassel asks Brassius to help with the lesson. Brassius helps Kris to overcome her art slump.

• "Player! I look forward to seeing you do your best today—as always!"
• "You and your Pokémon are still growing. I look forward to seeing where your path takes you!"
• "A teacher is supposed to be a role model for students. However... when I watch my students grow, I learn things too. That’s why I can never quit teaching!"
• "It’s a bit embarrassing, but when something moves me deeply, sometimes I sob uncontrollably. In particular, when a student of mine shows\ntremendous growth and surpasses me, I—I just... BWUUUH huh huh! I’b so habby just thinking aboub it!"
• "Beauty isn’t the kind of thing you should force into a box and score. That goes for paintings, sculptures...and for some people, even their bonds with Pokémon! Seek what YOU think is beautiful—together with your partner Pokémon."
• "Strong Trainers from all over are gathered here on Pasio. Thrilling, isn’t it? It’s like a trial by dragon’s fire! If you make it through, your future’s wide open! You would be wise to keep training hard. It will save you from experiencing bitter regret."
• "Player, if you encounter a sync pair on Pasio you think is beautiful... ask yourself why you feel that way. Observe them closely, and think! Asking questions and digging deeper is important—for art and for academics!"
• "Here’s a gift for you, the young up-and-comer! Young sprouts truly do grow with astounding speed, yes... I look forward to seeing the flowers you’ll bloom!"
• "It could be said that one doesn’t need art to survive... But it certainly makes surviving much more enjoyable! If the things I teach you can bring even a little more color to your life, I’ll be happy."
• "Don’t think it’s a waste of time to learn things that aren’t strictly necessary. Learning is the trick to a long, fulfilling life!"
• "There’s a saying: “Knowing a skill will help in your time of need. It doesn’t matter if it’s something you’re good at or just something you’re interested in. Develop those skills! The day will come when they come in handy!"
• "Life is interesting because you can’t predict what’s going to happen! The day your hidden talent blooms may not be far off!"
• "Go ahead—take in and feel the beauty of this crisp, morning air!"
• "Your passion for studying is impressive. But youth is the only time when you can play without a care in the world!"
• "Well done today! I think someone who works this hard deserves a little treasure from the dragon’s hoard."

• Hassel: "I'm humbled to be on your team, La Primera! I won't let you down!"
  Geeta: "Lend me your strength, Hassel!"
• Hassel: "I'll try not to rely on you too much, Rika!"
  Rika: "I'm standing with the fortress guarding dragon!"
• Hassel: "(sobbing) You're working so hard, Poppy! With such dedication!"
  Poppy: "Grandpa Hassel! There there... want a hug?"
• Hassel: "Honestly, Larry. Always with the poor attitude!"
  Larry: "Did you need something, Hassel?"
• Hassel: "I'm feeling motivated now that Director Clavell is watching!"
  Clavell: "I'll be counting on your passionate teaching, Mr. Hassel!"
• Hassel: "Let us learn about the beauty of biology with Mr. Jacq!"
  Jacq: "If Mr. Hassel's with us, we'll be fine!"
• Hassel: "I'll leave healing the Pokémon to you, nurse Miriam!"
  Miriam: "The perfect chance to study Mr. Hassel's tactics!"
• Hassel: "Let us dive deeper into learning about art, Mela!"
  Mela: "Uhh... I'm looking forward to art class."
• Hassel: "Could you be our special guest again, Brassie?"
  Brassius: "Hass! Let us begin our class with artistic flair!"
• Hassel: "Burgh! I would love to see you teach a class!"
• Hassel: "The color you use to draw the ocean is spectacular, Mina!"

• Geeta: "That was a touching..."
  Hassel: "... and beautiful battle!"
• Hassel: "The fortress has been defended!"
  Rika: "That's our old man!"
• Poppy: "Thanks for the battle!"
  Hassel: "Such good manners!"
• Hassel: "That was an artistic victory!"
  Larry: "It... was...?"
• Clavell: "How was that battle?"
  Hassel: "I could feel the passion!"
• Hassel: "This is the beauty of biology!"
  Jacq: "Hmm, you think so?"
• Miriam: "Wow! What a fast recovery!"
  Hassel: "Dragon's are sturdy creatures!"
• Hassel: "Excellent! Full marks!"
  Mela: "F-for real?"
• Brassius: "That concludes my class!"
  Hassel: "It truly reflected your style!"