It struck me as I’m sure it did many Chrono Trigger fans how much Maru’s character resembled Lucca, at least in terms of personality. Considering the presence of a poster of Crono in Abigail’s room, I’d wager that ConcernedApe is at least fan of that game so the inspiration is quite apparent. So I took it upon myself to make a fun little mod that changes Maru to look more like the character who inspired her personality.At first I considered just using the Chrono Trigger sprites themselves and while it technically would have been possible (since the sprite sheet uses the same amount of space), the sprite itself would’ve been much taller and just looked out-of-place in general. On top of that, the animations wouldn’t quite translate either. So I decided to use just a few elements from the original sprite (mainly the helmet and glasses) and do the rest as an edit to the original Maru sprites.The idea to call it a “cosplay” was mainly because I obviously can’t change her name to Lucca (at least not without a lot more work). You don’t necessarily need to think of this as a cosplay, though, it might make more sense to just say that this is just the way she dresses.At any rate, I've gone the extra mile to include some extra options and material for this mod.-In the Optional Files folder, I have included extra sprite edits for Robin and Demetrius, changing them into Lara and Taban respectively (have no idea what I'd do with Sebastian, so I left him alone). I've also included a sprite edit that changes a certain character into Robo.-The Optional Files folder also contains further Robo-themed sprite replacements which unfortunately use shared sprite sheets (explained in the installation instructions). I am also providing a ressource for anyone who wishes to manually combine the sprite sheets using an image-editing program.-There are caucasian and interacial varients for both Maru and the optional parent sprite replacements. Based on your preferences, you can choose to have the characters look more like their Chrono Trigger characters or more like their original Stardew Valley characters with regards to their skin tones.
First, don't forget to backup the Content files that are replaced by this mod.The mod is divided into three parts. The Required Files folder contains the character and portrait replacements for both her casual and nurse outfits, along with the Robo replacement. The Optional Files folder contains two sub-folders:Robo Extras has replacements for townInterior.xnb (which changes the device Maru tinkers with into Robo), Craftables.xnb (which changes something secret) and Cursors.xnb (which also changes something secret). Since these files could easily conflict with other mods, I’ve decided to keep them separate.  If you have the know-how, I’m providing a separate download with PNG files featuring just the modified sprites so you can copy them into the sprite sheets from whatever mod(s) you might be using.The Lara, Taban & Robo folder includes replacements for Robin, Demetrius and [SPOILER] to change them into Lucca's parents and Robo.  I made them optional just in case some people prefer to only have Maru's sprite replaced.As for the installation process itself. Copy the files inside the(se) folder(s) into the Content folder for Stardew Valley. If you’re using a mod manager program, consult its documentation for further instructions if you need them.This if my very first mod for Stardew Valley and my first mod involving pixel art so feedback and suggestions are certainly welcome. Thanks.
I've included an additional download for those with the know-how to manually combine the townInterior, Craftables and Cursors files with any other mods you may be using that modify those sprite sheets. Robo Extras contains a pair of PNG files for each sheet. One is the sprite sheet sheet with just the modifications present, the other is a version where all the unmodified tiles are a solid green color, which should make it easier to line up the sheets in a layer-based image editor like Photoshop or GIMP.

About 75% of the content in this mod was done by hand to some degree or other. There are elements of Chrono Trigger sprites that were copied over to various degrees. That only sprite that's just about entirely verbatim from Chrono Trigger is the one for Robo. The characters and sprites are copyright of Square Enix and I claim no ownership over them. This is meant to be a freely availible fan mod for Stardew Valley.

If anyone wants to try their hand at creating better portraits for this mod, please be my guest. While I'm 90% satisfied with the way most of the character sprites turned out, the portraits are a different beast altogether. Just send them my way and I'll be sure to give you credit for them.