Solution: PH21: Introduction to Sprite Design
Answer: DARKNESS

Written by Derek Young

All of these characters are from video game franchises featured as modules in Puzzle Hunt 21.

							1	1
						2	1	1	2
					2	4	1	1	4	2
					5	1	2	2	1	5
			7	6	1	1	6	6	1	1	6	7
	2	7	1	4	1	1	1	1	1	1	4	1	7	2
1	2	2	1	2	2	3	1	1	3	2	2	1	2	2	1
1	2	3	3	2	2	1	1	1	1	2	2	3	3	2	1

				1	2	1
				2	2	2
			3	1	1	3
				5	2	5
						12
						12
				5	2	5
				4	6	4
3	1	2	2	2	1	3
		1	1	2	1	1
1	1	1	2	1	1	1
				3	8	3
		4	2	2	2	4
		2	1	4	1	2
					5	5
						16

Princess DAISY from Super Mario Odyssey

								1
								1	2
							2	1	2
							1	1	2		4
							1	1	1	1	1	1
				1			2	3	1	4	3	2
	1	2	2	1	1	3	3	1	1	1	1	3	2	3	1
1	1	1	1	2	2	1	2	3	3	1	3	4	2	1	1

					4
	2	1	1	1	2
1	2	1	2	1	1
		3	2	1	2
			1	3	1
	2	3	2	1	1
2	1	1	2	1	1
	1	2	1	2	1
		1	2	2	2
		1	1	2	2
		1	2	1	2
			1	1	1
				2	2
				3	2
				2	3
					2

The ARBITER from Halo

					1		1				1
					1		1				2
					1	2	1	1	1	1	3	1
					1	1	2	3	3	3	1	1
				4	2	2	2	2	1	5	2	3	3
				2	2	4	2	1	1	1	1	3	3	1
		3	5	1	2	2	2	2	1	1	1	1	1	1	2
	1	1	3	3	1	1	1	1	2	1	1	1	3	1	1
3	2	1	1	2	1	1	1	3	2	2	2	3	3	1	2

						2	1
				1	4	1	1
				3	3	1	1
			1	1	3	1	1
			1	1	2	4	2
				1	4	3	1
			1	1	1	2	1
	4	1	1	2	1	2	1
		1	4	1	2	1	2
					3	9	4
	1	6	2	2	1	2	1
1	2	4	1	2	1	1	1
	5	1	1	2	1	1	1
		1	3	4	1	1	1
				4	4	1	1
					1	4	2

RUSH from Mega Man

						3					2
						2	3			2	2
					13	8	2			2	8	10
	5	8	15	15	2	2	7	12	16	12	2	2	9	4

				7
				11
		8	2	3
5	2	2	2	3
		5	2	7
				14
				13
				13
				12
				12
				10
				9
			4	2
			2	2
			4	4
			4	4

Keke from Baba is You

				1		1			2	2		2
			1	3		2			1	2		1
			1	2	1	2	1		2	1	2	1	1
		1	3	4	2	5	2	1	1	1	1	2	1	1
		3	3	1	6	1	5	9	4	4	1	1	1	1
	3	2	1	1	1	2	1	1	1	2	1	2	3	2
2	2	1	1	1	1	1	2	1	1	1	5	1	2	1	2

						2
					5	1
				5	2	3
				1	5	2
				1	7	1
		4	1	1	3	3
5	1	1	1	2	3	1
	4	4	2	1	3	1
	1	7	2	2	2	1
	1	7	2	1	1	2
	1	6	2	1	1	1
				1	5	4
					5	1
						2
				1	6	1
					1	1

NATU from Pokemon GO

					4					4
				4	1	4			4	1	4
				3	3	3	8	8	3	3	3
2	4	4	3	7	7	7	7	7	7	7	7	3	4	4	2

		8
		8
		8
		8
1	2	1
		8
		8
		8

		10
		12
		12
2	8	2
2	8	2
2	8	2
2	8	2

ENDERMAN from Minecraft

					1
					1	2			2
					1	1		1	1	1
					1	1		1	1	1	1
				1	1	1	1	2	1	1	3
				3	2	1	1	3	1	1	1
	3		3	1	1	2	2	2	2	1	1
	1		4	1	2	1	3	2	1	2	2	3		3
	2		1	2	1	1	2	1	1	1	3	4		1
2	1		1	3	2	3	4	1	3	5	1	1		2	2
1	1	5	1	2	1	1	1	1	1	1	1	1	5	1	1
1	1	2	1	1	1	1	2	2	1	1	1	1	1	2	2

									2
							2	2	2
					1	1	4	1	1
			1	1	1	2	1	1	1
			1	2	1	2	1	2	1
			1	1	1	4	1	1	1
					3	1	2	1	3
			3	1	2	2	2	1	3
			5	1	1	2	1	1	5
			5	1	1	2	1	1	5
	1	2	2	1	2	1	2	2	1
			2	2	1	2	1	4	2
					1	1	8	1	1
			2	1	2	2	2	1	2
1	2	1	1	1	1	2	2	1	2
	1	2	1	1	1	4	1	1	3

SAMUS from Super Metroid

							2	3
							3	1
						3	5	6				4
						2	1	2	8	4	4	2		6
	1	1	3			9	3	2	4	4	4	3		2
	2	3	4	12	13	1	1	1	2	1	1	3	6	1
1	1	2	3	1	2	1	1	1	1	2	2	1	3	1	1

			4
		8	1
6	1	4	2
	3	3	6
	2	2	7
		8	4
		9	3
10	1	1	1
	7	1	1
		5	6
	4	7	2
		6	6
	8	3	1
			7
4	1	2	1
	2	3	4

SONIC the Hedgehog from Genesis

The first letters of all these characters, taken in order, spell out the answer DARKNESS.