CG also can wipe out all humans.

<p>When you die with a legend, your soul does not return to Akasha to be recycled, ie. you are removed from the cycle of reincarnation. You are instead sent to the Throne of Heroes. </p><p>When you make a contract with the world (Alaya), it means you become a Counter Guardian after death, such is the case of Archer. You will also be sent to the Thrones of Heroes. </p><p>Here's the thing, whenever humanity is threatened, Alaya will summon the Counter Guardians to deal with the threat. Their MAIN BODY is actually summoned, so everything they learn and experience stays. Normally, only Counter Guardians (such as Archer) are sent to fight in such events (and not Heroic Spirits from legend). </p><p>The Holy Grail, however, cannot summon the main body of these Heroic Spirits. Such a miracle is only possible by Alaya. What the Holy Grail instead does, is preparing a suited vessel (the class) and using information from the original heroic spirit, it summons a COPY of it into the world. You should therefore think of a Servant summoned by the Grail and the true Heroic Spirit as two separate entities. Because of this, it is natural that the true HS does not retain the memories of its copy's summoning. However, when the copy dies and returns, it does actually send information back to the true Heroic Spirit, but that's all it is; unordered knowledge, not actual memories. This was explained by Rin in UBW by something like undated "books or diaries" sent back for the spirit to read. </p><p>So, in Archer's case, he actually has memories of all the events he goes through whenever Alaya summons him to do his duty as a Counter Guardian. In the Holy Grail War system, however, he is only a copy of the true Archer, but the knowledge will still be accessible to him. https://www.google.com/amp/s/amp.reddit.com/r/fatestaynight/comments/369a30/spoiler_vn_ubw_question_about_counter_guardians/ </p>

<p>Counter Guardians are an Incorporeal murder machine with functionally infinite prana, </p>

<p>I do know how summoning works. And Archer, in fact, has memories so much that he compare Gae Bolg with Odin's Spear Gungnir. But i am not tali,g about memories, because another person here have his memories *watch Saber* </p><p>
</p><p>The problem is that Counter Guardians are members of the Counter Force. They are his... how to say, main body? I know that Alaya shall summon CG in their true body, but the thing is that when Archer face Sakura, you said it : it was as a Counter Force. It was as a Counter Guardian, buffed and all. </p><p>Same goes for Primate Murder: Counter Guardians need to be seven to contain him, and Nasu compare said CG as servants in term of power, because it's not about method but power level that we talk here (containing PM). And all the counter force could wipe out humanity. Not a counter guardian, but the counter force. All of them against just one Grand Caster.  </p><p>
</p><p>Technically, Gaia couls also summon Heroic Spirits if she wanted to (and it's how she summon usually Grand Servant to face the beast), but yeah the Holy Grail is just some kind of Copy-past that copy a heroic spirit soul and put him in a vessel. Howeever, in term of abilites, they have counter guardians power.  The only problem they have is prana, which make all the difference in power: When you have unlimited prana (almost), yeah Archer could wipe out the city with a good spamming of Caladbolg. Like any servant with unlimited prana XD.  </p>

<p>Counter force acts 2 ways powering up certain individual via counter force to take care of that threat. if it fails they send CG to clean thr disaster and they also kill that individual </p>

Primate murder is also a beast of gaia he's also getting infinite mana from gaia

<p>A Grand vessel is the soul of an actual hero (with his/her own legend) summoned by the world directly from the Throne of Heroes to deal with the Beasts. </p>

in hf there was no cg

Also saber is not HS.