The word for the person is おべっか使い.

What Sumippi has given you is the word for the action.

I see. Thank you for the info :)
================

For today, I have a page to ask.

http://i.imgur.com/UNNd8.jpg
1/ Can someone tell me what らしいといえばらしい means?
2/ Just to be sure, the sentence which ends with って感じ describes Masaharu, correct?
3/ Is 様 in the context read as よう?
4/ The verb 閉じる is used when talking about turning off a cell phone regardless of the type, am I right?
5/ Is っちゃ = っては?
6/ Does に向いてそう mean "may be suitable for"?
7/ 競技 here means "competitive sports", doesn't it?

1. It means "He is being as one would expect.". "Masaharu is just being Masaharu-like."

＝　「正春らしいと言えば正春らしい」

2. Yes.

3. No. It is read さま but it has nothing to do with the honorific. Look up 「様になる」.

4. Exactly.

5. No. It is short for って言えば.

6. Right.

7. Precisely.

Thanks for the correction. So it means the same as 似合う, right?

I'm adding one more question.

正春はぼくの答えを面白がるように繰り返しただけど、 葵はそれを聞くと、きっぱりと頭を横に振った。
Just to be sure, does 頭を横に振る mean "to shake one's head"?

Yeah, it means "to look very good (doing or wearing a particular thing)"

Not quite. It usually means "to (imply to) say no".

Likewise, 首を縦に振る means "to say yes".

Wow, I didn't know this. Thanks again masaegu :)

I'm not sure what the first line is saying, despite knowing what all the words mean. "One by one is boringことは I don't say. Come at me all at once. I'll destroy you all."

If it weren't for the fact that she immediately tells her audience to come at her all at once, I'd do, "I don't say/call coming one by one boring," but I can't figure out why she would say that then go on to say the rest.

How do you get "call" ? Your TL of the first line is pretty off. This 「～～ことは言わない」 is nothing about actually saying or not saying something. It means "I won't take ~~~ kinda approach.", "I won't allow myself things like ~~~", etc.

"Boring" does not really capture the nuance of まだるっこしい, either. It is like "really slow and lackadaisical"

It's a common alternate translation for 言う.
Find sentences - Denshi Jisho
You can find more examples in other conjugations.

I agree about boring, but that's the closest word I could think of that a villain would use when making cocksure threats.

Thank you for the ことは言わない.

Again, I have a few questions on vocabulary.

http://i.imgur.com/2iDF1.jpg
1/ Does 習い事 in this context mean "course"?
2/ Is 陸上 short for 陸上競技?
3/ 習字 here means "calligraphy", correct?
4/ Does 蘭くんと葵ちゃんが逆だったらよかったのにねえ mean "It'd be great if Ran and Aoi switched places"?
5/ By しないと思う, does the narrator mean he thinks that a childhood friend who is growing up and becoming more feminine everyday would not do things like putting a guy in a headlock or 胸当て?