Several examples from Fate/Nuovo Guerra, but a notable one is Uther Pendragon: he has top-level endurance, a Dragon Affinity that boosts that endurance even further as well as protects against status-lowering effects, a Rank-A holy sword that specializes in armor piercing, and AGI to throw it down with the rest of them. His main problem is his limited range, and the off-chance that somebody might come equipped with an Anti-Dragon Noble Phantasm.
Another is Mordred, who hefts a Rank A++ Wave Motion Sword that has a secondary ability of slowing down enemies by making their weapons heavier with each stroke they exchange, has enough speed to keep up with most speedsters, and reasonable defense. As the war progresses, however, she grows closer to Mighty Glacier Saber Alter, due to the growing power of the corrupted Grail.
As mentioned, several Servants (like Odysseus and El Cid) have top-level AGI paired with superior defense and strength.
In Tribe Twelve "Mary Asher's Phone Call", Slendy reveals that the reason he can be anywhere, everywhere, no matter what isn't because he somehow teleports. He's just really fast. Especially unnerving since he's usually motionless.
In Homestuck, Bec Noir is able to destroy a universe, is fast enough to surprise John before the battle even starts, and can take hits from Vriska when she was most powerful.
Most of the freelancers in Red vs. Blue qualify as this, but special mention goes to Agent Texas and Carolina - like most freelancers, they just look like normal soldiers (albeit in armour) but are exceptionally fast and hard-hitting, even amongst their fellows.
Red vs. Blue has Agent Maine/The Meta, which despite being exceptionally large and wearing some heavy power-armour, can move at lightning speeds.
The Raktapata tank in The Solstice War. It is fast enough that it can keep up with light tanks while being invulnerable to their weapons, and can destroy them all in one hit wherever it manages to get them.
Ruby Rose from RWBY is capable of moving so fast that her tailwind has enough force to crack a wall and slam the members of team JNPR into it. She also wields a sniper-scythe that can split a 2-meter tall wolf-monster in twain, and uses its recoil to add to her speed.
MercuryBlack is one of the most physically imposing and athletic villains to appear on the show thus far. Not only does he pretty much toy with Pyrrha and Yang in his fights against them and he's strong enough to tank a sword swipe from Yatsuhashi, but he's also so fast he can intercept Ruby mid-Flash Step.