I'll probably keep Pestilance due to Paras having two double weakness.
Though Paras would be nice in the next few gyms. Good against water, resists electricity, good against and resistant to grass, good against psychic, and good against ground in the last gym. But I'm biased against Butterfree, so ignore what I say.
Utsuho Reiuji avatar by linklele
Jehoash Kelvin in Shadows by BluesEclipse
Cain Treblinka in Ambitions by Eshkigal
Zoe Moranai in Defiance of the Forgotten by IrnBruAddict