So... Since I will never have the chance to play on a decent RO Server anymore because every server nowadays is s*** or dies after 2 months of launch or something like that, Im going to post some of my builds and guilds. Also a Full tank MVP champ was requested some days ago.
I've spent time to develop this build together with a friend. Also kinda hurts me to make this public. But better for everyone to profit.
Im going to say this: I will make this very quick and easy. This is for people who know RO anyway. if you're a pure noob, then its nothing for you. I will make this very very clear.
Before we begin I need to say that my build is kinda unique because my main focus is not on DEF or MDEF but rather on Perfect Dodge. Yes, you read that correctly. If thats nothing for you, stay out of it.
Question 1: What is a Full tank MVP champ?
A full tank MVP champ is a champ who specialized on tanking MVPS for the party.
Question 2: How can champions tank? Arent champions traditionally MVP killers?
Many people dont even know that champions were also designed as a tank class - yes you can play champion both as tank AND MVP killer. Champions have the best tank skill, called steel body.
Question 3: Why Luk/perfect dodge for champion? Because people who can wear vlakyries garment can get a high percentage of perfect dodge. And Perfect dodge means that you dodge a attack of an enemy completly. Many people underestimate the role of perfect dodge sadly. It makes tanking very easy. You can outpot mvps without any problems.
I just want to tell: This here is a generic style Tank. Its a build for tanking many mvps without changing much.
This guide is perfect dodge based. I know that you can reduce the dmg even more, but thats not necessary in most cases.
Im making the stats not fixed, just give roughly values.
STR: 30-40: Now you will ask why STR? Because you need weight for item foods and Champion doesnt have a peco peco.
VIT: 99. You need to reach Max HP in order to survive attacks.
INT: at least 50 Int. You need soft MDEF.
LUK: At least 70 LUK for high perfect dodge.
You need only these 4 stats.
Skills should be clear. You need Steel body, body relocation, dangerous soul collect, Finger offensive, Angelus, Agi, Blessing... Rest should be clear. I hope I didint forget something.
Equip: I've made many versions of equip. Here Im going to post two of them.
Also dont forget: That you can always equip better when facing different MVPS. Like fire elemental against ifrit or stone buckler against large sized enemies. Also there are better variants like Stone Buckler when facing large MVPS etc. Note that.
Also thanks to Zereges for remembering to name holy robe as a armor when facing demons such as s morroc or sieger.
Headgear: Friggs Circlet +7/8/9/10: Reason why: for MDEF reasons, try to to refine it as high as possible.
Heargear: Sunglasses with gibbet card. Reasony why: Gibbet gives MDEF + 5. Or you can you Grand Peco Card for Vit and DEF, but it must be in combination with peco peco card.
Armor: Diabolus robe + Peco peco card for HP reasons.
Mace  with 4 lunatic cards for perfect dodge reasons.
Valkyrie shield with a alice card for reductions reasons. Try to refine valk shield as high as possible.
valk mantle + raydric card. Valk mantle is one of your most important gears. Its for perfect dodge reasons. Try to refine it at least to +7. Raydric card is for reduction reasons.
Variant shoes for maximum amount of HP.
On acessories there are many many variants what you can use: But you need to use always yoyo cards for perfect dodge. The accesories should give you at least mdef, def, luk or perfect dodge and should be slotted.
You can use: Linen Glove , Pinguicula Corsage , Rosary , Cursed Hand .
I used 2 rosaries with 2 yoyo cards for mdef and perfect dodge.
Well, you can also use 2x Alligator Card for acessories if you already have high perfect dodge.
My second variant is to use Odin's Blessing  with peco peco card instead of diab robe. If you use that alongside friggs circlet, valk shield you get a nice MDEF Combo.
Also you can use gibbet card for your sunglasses instead of a grand peco peco card.
You can also use Long Mace
- as a weapon for reduced long range damage.
Also, against ifrit you should wear fire elemental armor.
Always try to get a balance of high HP, perfect dodge, MDEF and DEF. Thats the key.
Items: When I go Tanking, I use assumpito scrolls, 500/600x mastela fruit for healing, also Schwartzwald Pine Jubilee for more perfect dodge. Also Luk+10 food. Try not to forget to bless and agi yourself.
When you teleport in the map and you find the mvp, go near the mvp via body relocation, use steel body and have fun. Or try to make someone else lure the mvp to you.
Who can you tank? I tanked ifrit, satan morroc, naight sieger on my own. Was very very easy.
Video proof of the build/guide: https://www.youtube.com/watch?v=QrhRftF4mHYhttps://www.youtube.com/watch?v=tNkdTDz6aHAhttps://www.youtube.com/watch?v=pnYks_ukjyQ
Have fun. The video is not mine, it belongs to a friend of mine. Also, against ifrit you should wear fire elemental armor.