zOrderの値を設定することでオブジェクトの奥行きを決められます。値が小さいほど手前に表示されます。
Main
new Chara1{x=100, y=100, p=0, zOrder=0};
new Chara1{x=100, y=116, p=5, zOrder=1};
new Chara1{x=100, y=132, p=9, zOrder=2};
new Chara1{x=200, y=100, p=0, zOrder=0};
new Chara1{x=200, y=116, p=5, zOrder=2};
new Chara1{x=200, y=132, p=9, zOrder=1};
new Chara1{x=300, y=100, p=0, zOrder=1};
new Chara1{x=300, y=116, p=5, zOrder=0};
new Chara1{x=300, y=132, p=9, zOrder=2};
Chara1
while(true){
rotation++;
update();
}