vs Goddess Rhongomyniad (Mordred or Okita)

Okita. The overcharge effect for Mordred doesn't do enough to make up for the fact that it is AoE, at least at np1. St all the way.

You should pick mordred, she can tank the piercing inv np and the dmg+ she get make up from the fact its an AOE, plus you can do a chain np and increase Mordred Np damage

you can check the np damage chart for lancer, Mordred is above in that case.
https://grandorder.gamepress.gg/sites/grandorder/files/2018-10/np%20damage%20against%20lancer%2020181023.png

Seconding Okita here. I used both. My first try I used Mordred and struggled hard and lost. The second time with Okita wasn't even a challenge.

Use okita, wehn i fought lartoria i just used mash,scathach and okita and i won without using comand seals😂

Okita is better. The damage from mordred's NP is meh. I also used an NP 2 Sumanai but it didn't worked as well. ST NPs work well with Bosses plus the NP refund is incredible though it's quick.

If you are confident in charging okita's np charge quickly, she will do a lot of damage with np and crits. However, mordred is probably the safer choice as her def up can help her survive an enemy np while okita has nothing.

I would like to warn you 1st that evasion or invincibility is useless against GoR NP(she has skill that charges NP and likely to spam it). But if you want to settle the match quick Okita is one of best choice. Another option is team of Nero Bride + waver + tamamo(can be replaced with mozart if you level him up) + mash. Def up is better than evade/invi in this case. Her NP will deal around 7k - 10k damage to saber class

I picked Mordred cuz memes lol. Though I did beat her with the right lineup

But pick Okita for a Daishouri. Just to be on the safe side as well