So today I found out about doc and marios extended upb, which I have never seen mentioned before or found myself. First let me start by saying this isn't horizontal angling, but rather gaining more vertical height then a no angle/upward angle up-b, and also a lot less horizontal distance. Heres a gfy comparing the difference.

This is doing the Up-B at the closest horizontal position possible, and the lowest vertical position possible.

Why and How?

Certain up-bs can be angled and reversed, the marios, marth and roy are the best examples. Each one has a frame in which the angle is decided by reading your control stick, and another frame where the direction (reverse or not) is decided.

Doc decides his angle on frame 3, and his direction on frame 4. So if he inputs back on frame 3, but then moves the stick anywhere but back on frame 4, he will angle away but up-b forward. This results in the extended up-b. Mario is the same concept, except he decides his angle on frame 6, and direction on frame 7. So the input is slightly delayed.

The amount you extend the Up-B is dependent on how far horizontal your stick is on the angle deciding frame. Where the back notch will result in the most extension.

There are many ways you could perform these inputs, but I think the easiest way is to hit Up+B > Quarter Circle Back > Release to Neutral really fast.

Numbers for X and Y distances

Show

all numbers are at peak

Mario

Grounded



Extended - peak on frame 26

X-distance - 5.38

Y-distance - 43.96



Upward angled - peak on frame 24

X-distance - 17.55

Y-distance - 40.41



Airbourne



Extended - peak on frame 26

X-distance - 5.15

Y-distance - 33.66



Upward angled - peak on frame 24

X-distance - 16.72

Y-distance - 30.29



Doc

Airbourne



Extended - peak on frame 26

X-distance - 5.11

Y-distance - 38.74



Upward angled - peak on 24

X-distance - 16.68

Y-distance - 35.39

In terms of application, the difference in vertical height is small, but it's there so obviously being able to recover slightly higher will save your life occasionally. The difference in horizontal distance is pretty good, it'll help recovering on battlefield, will stop you getting pineappled on dreamland and will make it easier to get onto randall

- Schmoo