Marshall is often a popular choice. His clumsy yet endearing nature can be played up in fanfiction, especially when he's using his Mighty Pups powers. He could be in a situation where his firefighting skills are put to the ultimate test and his friends have to rely on him.
Chase is often really popular in Paw Patrol fanfic. He's the police pup, so he can be involved in a lot of action - packed and mystery - solving stories. Skye is also a favorite. Her ability to fly makes for some exciting adventure scenarios. And Ryder, of course, as the leader of the Paw Patrol, he's a central figure in many fanfics.
Obviously, Birdy herself is a very popular character to focus on. Her dual nature as an alien and her life on Earth make for a lot of interesting storylines. Tsutomu is also a key character. His relationship with Birdy, from being initially shocked to gradually becoming her partner, is full of potential for fanfiction.
In the Paw Patrol universe, a date could be really cute. For example, the pups might go on a picnic by the bay in Adventure Bay. They could share some pup - treats and enjoy the beautiful view. Skye and Chase could fly together on Skye's helicopter, having a fun time looking down at their friends playing on the beach.
Rubbles and Skye could also be a pair that goes on a date first. Rubble is strong and loves to build things, and Skye is adventurous. They could build a small fort together and then have a little 'fort date' where they share stories and have some snacks. It would be a fun and unique date for two very different but equally lovable pups.
In the Paw Patrol world, one day Chase got stuck in a deep pit while chasing a runaway cat. The other pups - Ryder, Skye, Marshall and the rest - sprang into action. Skye flew above the pit to assess the situation. Marshall brought his ladder truck. They carefully lowered the ladder into the pit. Ryder guided Chase to climb up. With their combined efforts, Chase was saved and they all celebrated with a big group hug.
Definitely Ryder from Paw Patrol and Penny from Top Wing. Ryder is the leader of the Paw Patrol, so he has great leadership skills and can come up with strategies. Penny is really smart and has her unique inventions. In a crossover, Ryder could use Penny's inventions to enhance the Paw Patrol's capabilities, and Penny could learn from Ryder about leading a team. Also, their friendship could be a central part of the story, showing how two leaders from different worlds can get along and make things work better for everyone.
Ryder is definitely a popular character to feature. He's the leader, so he can drive the story forward with his plans and strategies. Chase is also very popular as he's the police pup and can bring in elements of mystery and law - enforcement. Skye is often a favorite too, especially when there are aerial rescues or adventures that require her flying skills.
I think Ryder would be really interesting. As a human, he could be a young genius who is not only in charge of the Paw Patrol but also has his own personal struggles. Maybe he's trying to balance his studies with leading the team, or he has some family issues that he has to deal with while still being a great leader.
Maybe Chase could be captured by a new villain in Adventure Bay. The other pups would then have to use their unique skills. For example, Skye could use her flying skills to scout the area where Chase is held. Marshall could use his strength to break down any barriers. They would work as a team, just like always, to rescue their friend.
The pups will likely be very concerned. They might start by bringing Ryder his favorite things, like a warm blanket or a cup of hot cocoa. They'll probably also try to keep him entertained while he's sick, like by showing him their latest tricks.