For similar characters (like the Jack-o'-Lantern girl), the unlock triggers once a piston scene reaches its climax while the ritual environment is active.
If you're looking to submit a report (perhaps if Mal0 is not obtainable and you suspect a bug), here are some tips: how to unlock mal0 in lovely craft piston trap exclusive
: Place the Enderman into the China Delivery Package (China box for Steve). For similar characters (like the Jack-o'-Lantern girl), the
: Used to buy Shears and other basic resources at the shop. You can earn them by crafting and selling items like doors. how to unlock mal0 in lovely craft piston trap exclusive