Technically I didn't even rework it, just dug it out of the Wayback Machine.

This sprite is included in Zauberer.

https://doomwiki.org/wiki/Zauberer

 

 

Sounds intriguing.

 

There is also a bit of a hacky but somewhat functional trick to geneate forward-left/right and backward-left/right from forward and backwards sprites.

"A turn around sheet should show a character from a variety of different angles. The most basic are forward, backward, left and right, with the 3/4s angles forward-left, forward-right, backward-left and backward-right creating a more complete set. Left and right can be flipped versions of each other unless a character is asymmetrical (for example, wearing an eye-patch or having a facial scar). Backwards can usually be made by editing the forward facing sprite by covering the face with hair (or bald head) and reversing the hands and feet. Finally, the 3/4s angles can be made from the forward or backward image by using the 3D translation option in GIMP, rotating it by 45 degrees on the Y axis. This produces a reasonable albeit flat looking facsimile, although it is often best to then stretch the height back down by a bit. A degree of depth may then be restored by layering the image over itself offset by one or two pixels a few times. The 3/4s left and right can again be flipped provided the character is symmetrical."

 

This allows you to only produce five or even three frames for each direction. It might not be the best to use for the base, but might work for some of the overlays?

itch.io:

Main character artwork:

https://shatteredreality.itch.io/visual-novel-sprite-pack

 

OpenClipart.org:

Mechs:

https://openclipart.org/detail/345022/robort

https://openclipart.org/detail/273016/robot

https://openclipart.org/detail/201654/eight-little-robots

https://openclipart.org/detail/327819/futuristic-street-with-robots

https://openclipart.org/detail/327479/orange-cartoon-robot

https://openclipart.org/detail/20693/tripulated-robot

https://openclipart.org/detail/25614/saku-robot

https://openclipart.org/detail/2485/toy-robot

https://openclipart.org/detail/20510/robot-carrying-things-4

https://openclipart.org/detail/1736/robot

https://openclipart.org/detail/173068/robot-color-simply

https://openclipart.org/detail/125863/robot

https://openclipart.org/detail/218763/robot-protest

https://openclipart.org/detail/275523/large-robot

https://openclipart.org/detail/311809/retro-robot-line-art-duochrome

https://openclipart.org/detail/305120/robot

https://openclipart.org/detail/327992/grey-cartoon-robot

https://openclipart.org/detail/326661/robot

https://openclipart.org/detail/168171/replicante-10

https://openclipart.org/detail/5388/startoy

https://openclipart.org/detail/225747/Robot

https://openclipart.org/detail/228077/girl-and-robot

https://openclipart.org/detail/335536/full-body-robot

https://openclipart.org/detail/3505/mecha-warrior

https://openclipart.org/detail/98839/roboshopper

https://openclipart.org/detail/297959/standing-robot

 

Anime Dolls:

https://openclipart.org/detail/319597/anime-doll-to-dress-refixed

https://openclipart.org/detail/330445/anime-doll-to-dress-fashion

https://openclipart.org/detail/339027/maniqui-anime-para-vestirbydg-ra

https://openclipart.org/detail/344313/anime-cosplay-ninja-girls

https://openclipart.org/detail/344310/sports-outfits-clothing-for-female...

https://openclipart.org/detail/344301/hair-styles-manga-anime

https://openclipart.org/detail/344302/hair-styles-manga-anime-2

https://openclipart.org/detail/344520/anime-face-cyber-eyes-green

https://openclipart.org/detail/344588/anime-face-butterfly-on-the-nose

https://openclipart.org/detail/344628/anime-face-pink-bubble-gum

https://openclipart.org/detail/344501/anime-characters-boy-and-girl

https://openclipart.org/detail/344311/superheroine-anime-character

https://openclipart.org/detail/344307/portrait-of-anime-manga-girl-1

https://openclipart.org/detail/344306/portrait-of-anime-manga-girl-2

https://openclipart.org/detail/344305/anime-face-blue

https://openclipart.org/detail/344304/happy-anime-face-pink

https://openclipart.org/detail/344303/character-expressions-anime-manga

https://openclipart.org/detail/344300/eyes-manga-anime-4

https://openclipart.org/detail/344299/eyes-manga-anime-3

https://openclipart.org/detail/344298/eyes-manga-anime-2

https://openclipart.org/detail/344297/eyes-manga-anime-1

 

Anime General:

https://openclipart.org/tag/jungian

https://openclipart.org/detail/344312/princess-anime-character-green

https://openclipart.org/detail/258250/blonde-anime-cat-girl

https://openclipart.org/detail/32107/my-girl-anime

https://openclipart.org/detail/13408/anime-schoolgirl-with-green-ball

https://openclipart.org/detail/4567/pink-anime-girl-beta

https://openclipart.org/detail/285149/anime-girl-illustration

https://openclipart.org/detail/324151/brunette-anime-girl-animation

https://openclipart.org/detail/274246/anime-school-girl

https://openclipart.org/detail/282110/anime-collection

https://openclipart.org/detail/275537/confused-anime-boy

https://openclipart.org/detail/276444/young-man

https://openclipart.org/detail/274839/shy-girl

https://openclipart.org/detail/274739/asian-man

https://openclipart.org/detail/270292/anime-lady

https://openclipart.org/detail/263494/anime-family-line-art

https://openclipart.org/detail/222368/blue-haired-anime-girl-with-star-b...

https://openclipart.org/detail/222269/blue-haired-anime-girl

https://openclipart.org/detail/222101/anime-girl-with-city-backdrop

https://openclipart.org/detail/222103/happy-anime-woman

https://openclipart.org/detail/221263/blonde-anime-girl

https://openclipart.org/detail/221808/teenage-anime-girl

https://openclipart.org/detail/221501/brunette-anime-girl

https://openclipart.org/detail/175723/man-anime-face-shorter

https://openclipart.org/detail/175714/anime-man-face-longer

https://openclipart.org/detail/25619/astrid-graeber-boy

https://openclipart.org/detail/25617/astrid-graeber-adult

https://openclipart.org/detail/176252/anime-style-girl

https://openclipart.org/detail/176114/anime-girl-with-background

https://openclipart.org/detail/325341/snake-boy-anime

https://openclipart.org/detail/172524/chibi-neko

https://openclipart.org/detail/172525/cute

https://openclipart.org/detail/223838/anime-girl-cola-mateya

https://openclipart.org/detail/223831/anime-style-girl-and-boy

https://openclipart.org/detail/176117/standing-woman

https://openclipart.org/detail/250115/girl-with-a-tablet-by-bogdan

https://openclipart.org/detail/227453/anime-girl-orange-shirt

https://openclipart.org/detail/227451/anime-girl-school-chalkboard-2

https://openclipart.org/detail/227450/anime-girl-school-chalkboard

https://openclipart.org/detail/313180/anime-girl-thinking

https://openclipart.org/detail/296826/anime-girl

https://openclipart.org/detail/293036/feng

https://openclipart.org/detail/84007/icecat-girl-manga

https://openclipart.org/detail/29200/my-girl-red-hair

https://openclipart.org/detail/2363/female-student

https://openclipart.org/detail/7181/watia-girl

https://openclipart.org/detail/145771/fan-art-of-virtual-singer

https://openclipart.org/detail/172847/blue-hair-mermaid

https://openclipart.org/detail/169054/manga-school-boy

https://openclipart.org/detail/277323/school-girl-walking

https://openclipart.org/detail/250142/girl-with-cat

https://openclipart.org/detail/317309/japanese-teen-walking

https://openclipart.org/detail/301638/traffic-guard

https://openclipart.org/detail/296647/girl-walking

https://openclipart.org/detail/285204/cheerleader-3

https://openclipart.org/detail/2974/manga-face

https://openclipart.org/detail/169123/manga-girl

https://openclipart.org/detail/2364/girl-with-silver-hair

https://openclipart.org/detail/19874/happy-chibi

https://openclipart.org/detail/19631/chibi

https://openclipart.org/detail/19669/anime-man

https://openclipart.org/detail/319211/stand

https://openclipart.org/detail/318808/japanese-schoolgirl-with-smartphone

https://openclipart.org/detail/320920/schoolgirl-9

https://openclipart.org/detail/284045/schoolgirl-studying

https://openclipart.org/detail/317726/running-schoolgirls

https://openclipart.org/detail/312087/first-love-1

https://openclipart.org/detail/312088/first-love-1