First you combine the ingredients
you can't mix a monster it's either a Katsuma,Luvli,Poppet,Furi,Zommer,and, Diavlo.
27 different monsters
You can kill the monsters in the bunker, or if you have a monster juicer you can recycle them for goo.
If the monster is "not on" Moshi Monsters, then it would be helpful to know which game you are asking about as there are many games that have monsters in them. If you are asking because you have a free Basic Membership account on Moshi Monsters, your monster is "on" Moshi Monsters and you do the same things as everyone else to make your monster happy. That is, tickle your monster, play games, and feed it favorite foods.
mix in the frog, the rock, the cheese and snail.
You can make up your own name for your Moshi Monster. You choose an owner name and also a monster name.
in the right corner click adopt monster and you will have a monster in no time
Breed a fire monster and a plant monster.
Add a teen rock monster and a bug monster.
Breed a flower monster and a fire monster, I believe.
To make your Moshi Monster sick, do not play Moshi Monsters for a long time. If you do play Moshi Monsters, do not do anything that will add Health or Happiness to your monster, such as feeding your monster, playing games, or going walking in Monstro City.
Simply being a Tuner does not make a monster into an effect monster - it is not specifically an effect monster subtype, unlike Spirit or Toon. There are effect monsters who are Tuners, but there are also Normal Monsters with the Tuner subtype too, these are in no way counted as effect monsters.