Slime

	Classic	Expert	Master	Legendary (For the Worthy)
Life	25	50	75	100
Attack	7	14	21	37
Defense	2	2	2	2
Knockback Taken	100% (High)	90% (High)	80% (High)	80% (High)
Coins	25	62	62	87

The last column is Master mode in a world made with the For the Worthy seed. Its numbers were measured in the game, not computed here.

For one player in a world before Hardmode. Expert and Master scale life, attack, knockback and coins by the game's own multipliers.

Coins: each kill rolls the coins from 80% to 175% of this value, then rarer extra rolls can add more.

In a Hardmode world

On Expert and Master, a Hardmode world raises weak enemies: when attack plus defense plus a quarter of life is under 80 (100 after Plantera), the game multiplies them up.

World	Life	Attack	Defense	Knockback Taken	Coins
Expert, In Hardmode	274	62	10	90% (High)	250
Master, In Hardmode	411	93	10	80% (High)	250
Legendary, In Hardmode	548	165	10	80% (High)	350
Expert, After Plantera	330	74	12	90% (High)	3
Master, After Plantera	495	111	12	80% (High)	3
Legendary, After Plantera	660	197	12	80% (High)	420

5 variants

The game spawns this NPC in several forms that share its name. Each form has its own numbers.

Classic

Variant	Life	Attack	Defense	Knockback Taken	Coins
Variant 1 Size 100%	25	7	2	100% (High)	25
Variant 2 Size 100%	25	7	2	100% (High)	25
Variant 3 Size 90%	23	6	2	100% (High)	25
Variant 4 Size 105%	29	8	3	100% (High)	25
Variant 5 Size 85%	22	5	1	100% (High)	25

Expert

Variant	Life	Attack	Defense	Knockback Taken	Coins
Variant 1 Size 100%	50	14	2	90% (High)	62
Variant 2 Size 100%	50	14	2	90% (High)	62
Variant 3 Size 90%	46	12	2	90% (High)	62
Variant 4 Size 105%	58	16	3	90% (High)	62
Variant 5 Size 85%	44	10	1	90% (High)	62

Master

Variant	Life	Attack	Defense	Knockback Taken	Coins
Variant 1 Size 100%	75	21	2	80% (High)	62
Variant 2 Size 100%	75	21	2	80% (High)	62
Variant 3 Size 90%	69	18	2	80% (High)	62
Variant 4 Size 105%	87	24	3	80% (High)	62
Variant 5 Size 85%	66	15	1	80% (High)	62

Classic

Item	Only from	Quantity	Chance	Kills for 50%	Kills for 90%	Conditions
Gel	Every form	2 to 4	100%			In a world made with the Celebration Mk 10 and Drunk seeds, but not the Remix or Not the Bees seed
Gel	Every form	1 to 2	100%			In every world not made with the Celebration Mk 10 and Drunk seeds together
Giant Bow	Variant 2 Variant 3 Variant 4 Variant 5	1	1/20 (5%)	14	45
Slime Staff	Every form	1	1/10,000 (0.01%)	6,932	23,025

Expert

Item	Only from	Quantity	Chance	Kills for 50%	Kills for 90%	Conditions
Gel	Every form	2 to 4	100%			In a world made with the Celebration Mk 10 and Drunk seeds, but not the Remix or Not the Bees seed
Gel	Every form	1 to 2	100%			In every world not made with the Celebration Mk 10 and Drunk seeds together
Giant Bow	Variant 2 Variant 3 Variant 4 Variant 5	1	1/20 (5%)	14	45
Slime Staff	Every form	1	1/7,000 (0.014%)	4,852	16,117

Master

Item	Only from	Quantity	Chance	Kills for 50%	Kills for 90%	Conditions
Gel	Every form	2 to 4	100%			In a world made with the Celebration Mk 10 and Drunk seeds, but not the Remix or Not the Bees seed
Gel	Every form	1 to 2	100%			In every world not made with the Celebration Mk 10 and Drunk seeds together
Giant Bow	Variant 2 Variant 3 Variant 4 Variant 5	1	1/20 (5%)	14	45
Slime Staff	Every form	1	1/7,000 (0.014%)	4,852	16,117

Chance is per kill. Kills for 50% and 90% is how many kills give that chance to see the item at least once.