Agree with isgen. Larger bug in 3rd & 4th pic, Ladybug Larvae?

Can you take some pics with the lights off?

Not ladybug larva.

Perhaps a true bug.

#3 & 4 - depending on the color, it could be Firebug or Milkweed bug or perhaps Boxelder bug, and there are more similar ones - hard to tell from your photo, light are changing the look/coloration of it.

The last one looks almost like a spider...

Here is the photo of Ladybug larvae (they will feast on aphids-would be good to have some of these:)

I agree, you definitely have an Aphid problem. The larger bug, I am not sure of. The clarity and color of the photos is off. The larger bug could indeed be there feasting on the Aphids so don't automatically get rid of it, but the Aphids need to do, especially if the natural predators are not keeping them in check.

...and if you want a safe control of soft-bodied insects like aphids, try this. (It was one great piece of information from a day-long seminar on greenhouse management given by the local botanical garden. They have an acre under glass....) Put a capful of 91% isopropanol in a quart sprayer. Add a couple of drops of Dawn and fill with water. Swirl, don't shake - and spray. Cheap, safe and it works....

Yep, that is basically Insecticidal Soap although I haven't heard of adding the Isopropanol before.

Isopropyl alcohol...cheap ol' rubbing alcohol.... It was the botanical garden's go-to solution for all manner of soft-bodied pests. Even works on scale in the 'crawler' stage.

Wil isopropanol not damage the leaves or buds?

We're talking about 5 or so ml in almost a litre. I've used this stuff for 4+ years without apparent injury to anything, though I primarily use it on citrus - like my 45 y.o. calamondin and a 10 y.o. key lime. The botanical garden uses it on *everything*.

yah, the concentration of the rubbing alcohol is very minute. Luckily, the plants tolerate it a lot better than Aphids and other soft bodied insects.

This is the first his is the first I've heard of using rubbing alcohol. Thanks for the advice.

Using rubbing alcohol mixed 50/50 on any bugs on succulents and other plants, without adding any soap (soap will dissolve wax on leaves unless it is vegetable-based, like Castile soap. It may not cause much damage if using seldom, but if bugs persist it could be too much. I know it is recommended to improve 'stickiness' of the spray). No problem with any damage to leaves, as long as you don't spray in hot sun. After it dries (quite fast) it is OK to put plants back. So far, I didn't use anything else for bugs. Works well on mealy bugs, scale and many others.

Aphids could be 'washed off' with stiff spray of water unless large contamination (and if impossible to do it inside).