Heroes of Big Green:
Tien Kwan: definitely, he would be either the main father figure or a grandfather. He cares for everyone, protecting them and guiding them in times of need. He taught Lin Chung how to fight, use of Harmonic Energy and the importance of the faith in friendship (like in the Yeti and Phoenix).
Wu Song: uncle who works as dentist and likes to call himself the 'dental warrior'. He's the twin brother of Dog King, both works together to save their family from caries. He's kind like his bro.
Dog king: twin brother of Wu Song, he dresses in a dog costume and pretends to be a dog (well, he was raised by dogs, what do you expected?). However, no one in the family minds or worries. He's kind too.
Rattle Diva: the musician aunt, working in pairing with Panda king and Giraffe King. They work in a band called 'Do Re Mi band' and play from classic music to pure rock n' roll! She can get annoyed when the music-lovers Sonia and Mighty Ray interrupt her concert, but she forgives them.
Yan Ching: he's the short but thought uncle, he's usually calm but he would totally show who's the boss at the ones who looks down at him. He may seem short, but better never compare his strength to his size…
Red Face Kwan: the absolutely thought and grumpy uncle, always yelling at people and looking very angry all the time. He know how to get respected by the others and keeps everyone in shape. Despite he looks so angry and scary, he's kind.
Tank commander: the thought uncle, determinate but if he gets insulted he gets very sensible. He co-works with Gardener Ching.
Gardener Ching: the gardening uncle, he doesn't talk too much with the others but he co-works with the Tank commander in growing the plants.
Anti-air unit commander: the eater uncle, he always try out new foods, eventually he would even exaggerate, like when he tasted the bamboo shoots and accidentally left Lin Chung without ammo XD.
Fruiter: he's sort of distant uncle, or mostly a neighbor. He cares for the trees and nature and hates if people comes to ruin the forest. He's friend with big green.
Origin man: a caveman living like neighbor, he's friend with a T-Rex and doesn't speak so much…if someone makes him angry, he would hit them with his club (lol, maybe he's best-club-whacking-friend with Alpha Girl?)
Animal kingdoms (some of them…):
Cheetah king and queen: they could be the parents or uncle and aunt. They love each other, even if it means arguing like all other couples would do, but they are always there for each other.
Parrot king: he sounds quite elderly, so in a family, I'll imagine him as the grandpa. He taught his best student, ApeTrully, the human language and also likes to teach new students, like Jumpy. He become sort of grumpy when others doesn't pay attention to his classes, like the zebra brothers did.
Turtle king: he would be another kind of grandpa too. He's wise and experienced, usually calm but he would be enraged if someone of his is hurt.
Panda king: the musician uncle, a musician neighbor or even a music teacher, since he taught to Sonia.
Giraffe king: he co-works with Rattle Diva and Panda King in concerts.
Hamster king: he would be either an uncle, fathering the cousins (aka, the little hamsters) or maybe a father. He does look serious all the time but he's always there when kids are in need of help. He also helps training.
Elephant king: a happy go lucky uncle, he can be fooled easily sometimes and this makes him angry but he's soft heated after all, and he's friend with Sonia too.
Fox king: he would be a married uncle or a cousin already grown up to be father, he cares for his wife and children. He cares for the others too, and he would be a father figure like.
Eagle king: I don't exactly see him as an uncle, he's more like a serious neighbor or teacher…and at first very angry with the others, listening only to high roller and the zebras. Until he realized his mistakes and befriended Big Green.
Rot-wolf king: a distant, cold neighbor, he's quite the strategist but he's honorable when people gets to know him better.
Crab king: a worker uncle who works with bulldozers or a friendly worker neighbor.
Penguin king: a good looking, penguin-dressed uncle.
Pangolin queen: the definitely cheek-pinching kind of aunt who threats everyone like little kids XD
Peacock queen: the mostly vain aunt, she's very punctual and hates if people is late. She's however nice after all.