Thần Lửa - Goddess of Fire
Some time been call Bà Hoả - Lady Fire. Is an old woman with a horrible face that can scare the shit out of you. Legend say that if you use her fire in your kitchen, your house will always have food, you will not fear to be starving anymore. But she also the one who burn everything just for little fun. She was a good and chaos goddess at same time, totally random.
Note: Legend say that she not always appear as an ugly old woman. Some time she appear as a kind and beautiful young lady. But still burn your house to the ground if she feel like to do it.
Thần Núi - Deities of Mountain
Every mountains have a Deity. They just some animal or human, who has done something very good that get attention of the real gods (usually is Ông Trời) who will then turn them into The Deities of Mountain. Their duty is to watch and protect every living being in that mountain, keep the balance of nature. They also protect magic toys for Ông Trời from other naugty gods, demon and human who try to take it from him (He make too much toys and don't have enough space in castle to hide it. Some time he don't even know what it could do but heck, just don't care and make another one).
The most famous Deity of Mountain is Sơn Tinh, a human who learn magic and become god then marry princess Mỵ Nương, daughter of Hùng King.
Note: Deities of Mountain have one special job that not their duty but they just automatically do it. When a hero fall, his soul will go to the sky, but his body will stay and become a spirit. The God of Mountain will take care and protect that spirit from all evil being who want to use it for bad thing. Then turn it into The Holy Spirit of Mountain and River. Some kind of mindless guardian with godlike power to help the gods protect the mountain. That why Deities of Mountain also The Deities of Heroes.
And yes, they can die because old age (except special case like Sơn Tinh).
Thần nước - Deities of Water
Like Deities of Mountain. Every river and sea have a Deity to control it (they control sea because the fucking God of Sea don't do shit about it). They also have power to create rain so they are Deities of Rain too. In all gods, Deities of Water is the one who has more interesting in human. There are many tales about they harm, rape, oppression, make friend, protect, and fall in love with human.
The most infamous Deity of Water is Thuỷ Tinh, who was a friend, a brother to Sơn Tinh but end up become his nemesis because a love triangle.
They not been replace but their duty has been limited then before. They are no longer control sea and rain. Thank for another two bastard from China that i don't bother to mention their names.
Note: Most of Deities of Water is a big crocodile can turn into human shape by magic, of couse. But some time that could be a demigod like Thuỷ Tinh or a dragon. Another thing that need to mention is God of Water indeed live very long, longer then Deities of Mountain, but they not Immortal. They can be die when battle with human, monster, demon or execution by Ông Trời.
Ông Đùng - The Giant One
Like it say. Is a freaking huge and giant god. Who every single steps loud like a storm and shake the world. His footprint become lake and swamp. His wife is Bà Đoàng (a goddess who just same size as him). They use to tectonic mountain, damming or kill monster for fun. When they have sex, you better run away from there because they will make earth quake. And after everytime like that, next season crops will be better (for some reason this kind of bullshit).
He and his wife is God of Wind, God of Storm, God of Tectonic Terrain, Protector of Human, God of Season, God of Love and Sex and Impregnation (damn they has so many title).
Note: He has an unwanted son with a mortal woman who lately become one of The Four Immortal.