Lance's family might be really welcoming. They could see that Keith is an important part of Lance's life and embrace him right away.
Some of Lance's family members could be a bit skeptical at first. Keith has a different personality and background compared to them. But as they get to know him better, they start to warm up to him. For instance, Lance's older brother might initially think Keith is too serious, but after seeing how Keith helps around the house and is kind to Lance, he changes his mind.
He might be polite but a bit guarded at first.
In this fanfiction, Keith might initially feel out of place when meeting Lance's family. He could be a bit shy or reserved at first.
A lot of the fanfictions about their kiss also explore the reactions of the other characters in the Voltron team. Some might be supportive, while others could be initially shocked or confused. The kiss can also be a symbol of a new era in the team's dynamics, as Keith and Lance's relationship changes. It can lead to interesting storylines about how the team adapts to this new development.
They might have all sorts of adventures. Maybe they go on a family fishing trip and Keith has to learn how to bait a hook, which he's never done before. And Lance's family could be showing Keith all the local hidden gems in their town.
Keith initially reacts with defiance. He's a fighter, so he would likely struggle against his captors right from the start. He might try to break free of his restraints and attack any Galra who get too close, even if he's outnumbered.
In this fanfiction, perhaps Keith would be really nervous at first. He might worry about making a good impression on Lance's family. Maybe he'd bring a small but meaningful gift, like a flower from his home planet.
Well, the team's reaction can vary depending on the specific circumstances in the fanfiction. Sometimes they are angry, especially if they think the injury was preventable. They'll do whatever it takes to get revenge on the cause of Keith's hurt if it was due to an enemy attack. And they'll also be there for Keith during his recovery, sharing stories, and trying to keep his spirits up so he can heal faster.
One common theme is the overcoming of internal barriers. Both Keith and Lance have their own insecurities and issues that they need to deal with before getting to the point of a kiss. Another theme is the exploration of their different personalities coming together. Keith's more brooding nature and Lance's more outgoing personality can create interesting dynamics in the lead - up to the kiss.
Obviously, Keith and Lance are main characters. Keith is the one going to meet Lance's family.
Keith will likely be defiant. He has a strong sense of justice and will not be easily broken by Zarkon. He might try to fight back immediately if he has the chance.