So not all, but most games have am early-ish three stage rock type you can get. Those being Golem, Gigalith, Garganacl, Coalossal, and Aggron. So what better way to make one that also covers the missing rock/ghost type. So Tooomb is just tomb but with several O's to make it sound like the generic noise you think of ghosts making, being "booooooo". Caskreep is casket and creep combined, and Nekrolith is necro and monolith/monolithic combined
Not sure if I'm missing anything about these guys but if I did just ask down below. As always credit for the artwork goes to @poketrainervb on Instagram who does all my commissions. Hope everyone enjoys this line cause I sure did, and thanks for checking these guys out
by VORT3XSN1PER