Found this on the konosuba wiki : r/Megumin

Seiyuu - Seiyuu X Character Megumin CV Rie Takahashi Megumin is an Arch Wizard of the Crimson Magic Clan in the Fantasy World, and is the first person to join Kazuma's party.

KonoSuba - Wikiwand

KonoSuba: An Explosion on This Wonderful World! episode 2: Megumin acquires a familiar

File:Cosplayer of Megumin, KonoSuba 20171021a.jpg - Wikimedia Commons

KonoSuba Megumin (Explosion Ver.) 1/7 Scale Shibuya Scramble Figure

Konosuba: An Explosion on This Wonderful World!- Spin-off TV anime adaptation announced

Megumin - Wikipedia

File:Cosplayers of Megumin and Aqua, KonoSuba 20180505b.jpg - Wikimedia Commons

KONOSUBA Visual Novel Announced for the West - oprainfall

Megumin's Turn! Vol. 1, Wiki