{{Lyrics
| group         =[[IOSYS]]
| titlejp       =勇者わんわん
| titlerom      =Yuusha Wanwan
| titleen       =Hero Woof-Woof
| length        =4:12
| arranger      =ARM
| lyricist      =ARM 
| vocalist      =ARM, ARM-ko
* chorus: ARM
* guitar: ARM
* original title: {{lang|ja|妖怪モダンコロニー}}
* source: {{DS}}
* original title: {{lang|ja|フォールオブフォール　～ 秋めく滝}}
* source: {{MoF}}
| album1        ={{LyricAlbum|東方エレクトリック電波少女|Electricdenpashojo.jpg}}
| album2        ={{LyricAlbum|Grimoire of IOSYS – 東方BEST ALBUM vol.3|IO-0201.jpg}}
| extra_info = [http://tetlapot.net/flash/hero_wanwan.htm Flash promotional video]
|kan1=
明日への光　照らす希望さ
わん　わん　わんわん　わんわん　うーわん！
勇者わんわん

|kan2=
いつまでたっても下っ端扱い
パシリも慣れてきちゃったし
ののの　だめさ弱きはだめさ
ののの　君も強くなれるさ

|kan3=
わんわん　勇者わんわん
なんで勇者！？
わんわん　勇者わんわん
そうさ勇者さ

|kan4=
わんわん　勇者わんわん
なんか　燃　え　て　き　た
わんわん　勇者わんわん
解き放て　レイビーズバイト！

|kan5=
ああ　胸が熱い
ああ　これが勇者の心ね
ああ　明日を照らす
僕らの　僕らの　狗天狗

|kan6=
うーわん！
勇者わんわん

|rom1=
Asu e no hikari  Terasu kibou sa
Wan Wan Wanwan Wanwan U-wan!
Yuusha Wanwan

|rom2=
Itsumade tattemo shitappa atsukai
Pashiri mo naretekichatta shi
Nonono Dame sa yowaki wa dame sa
Nonono Kimi mo tsuyoku nareru sa

|rom3=
Wanwan Yuusha Wanwan
Nande yuusha!?
Wanwan Yuusha Wanwan
Sou sa yuusha sa

|rom4=
Wanwan Yuusha Wanwan
Nanka mo e te ki ta
Wanwan Yuusha Wanwan
Tokihanate  Reibiizu Baito!

|rom5=
Aa mune ga atsui
Aa kore ga yuusha no kokoro ne
Aa asu wo terasu
Bokura no bokura no inutengu

|rom6=
U-wan!
Yuusha Wanwan

|eng1=
Hope is the light that shows the way to tomorrow
Woof  Woof  Woof-woof  Woof-woof  Whoooah-ff!
Hero Woof-woof!

|eng2=
They never stop treating me like the underdog
I've even gotten used to being told to fetch
No, no no!  You must not lose hope!
No, no, no  You, too, can become stronger!

|eng3=
Woof... Woof... Hero Woof-Woof
"Why a hero?!"
Woof... Woof... Hero Woof-Woof
"That's right, a hero!"

|eng4=
Woof.. Woof... Hero Woof-Woof
I'm starting to get into it...
Woof... Woof... Hero Woof-Woof
Now unleash your Rabies Bite!

|eng5=
Ahh, my chest is hot...
Ahh, so this is a hero's heart...
Ahh, the light of tomorrow
Is our... is our... Dog tengu!

|eng6=
Whoooah-f!
Hero Woof-woof

|notes=
In the Tetla Pot flash, there are four Evangelion-style placards which flash briefly on screen between the fourth and fifth verses:

<pre>
Shameimaru Aya - Bunbun Newspaper

Himekaidou Hatate - Kakashi Spirit News

Telegnosis of the Mountain - Inubashiri Momiji


Top Secret (that we're broke)
Hakurei Completion Project
Gensokyo Dining Club Supreme Directorate
10th Interim Report
Hakurei Completion Committee
Fiscal Year 2007 Touhou Project Outline
Mountain of Faith Allocation
</pre>

The sign on the wall by Hatate after Momiji and Aya have beeing flying around together says "Sorry, did you have to wait?"

There's also a comic at the end:
<pre>
Momiji: Aaaaaaaarf!  Take that, Konpaaku!  Expellee's Canaan!  (*one of her spell cards)
Youmu: Come at me, Momiji!  Actually, I die if you just chant sutras!

Momiji: Namu Amida Butsu!
Youmu: GYAAAA!

Youmu: Yuyuko-samaaaaaaa!

(offscreen: Gyaaaa)
Kochiiya: It seems Konpaaku has been defeated...
Izayooi:  Heheheh... Truely, she was only half a man...
Kirisaame: If you lose to the likes of a youkai, you're not fit to be a protagonist...

Momiji:  Take that!!!!!
All three:  Kyaaaaaaa!!

Momiji:  I did it...  Finally, I defeated the playable characters.  Now the barrier around the Hakurei Shrine where Reimu is will open!

Reimu:  Momiji... Before we fight, I have one thing to say to you.  It seems you think you need "Lunatic" to defeat me... But actually Hard will do.

Momiji:  W... what did you say?!

Momiji:  Fu... very well.  I, too, have one thing to say.  Actually, the patrol tengu and the crow tengu don't get along.  Sorry for ignoring the canon!

Reimu:  Is that so.

Reimu:  And there's no proper portrait of you, so it looks like they used the pixel art as a reference when drawing you.
Now all you have to do is defeat me.
Ha ha ha...

Momiji:  Aaaaaaarrf!  Here we goooo!
Reimu:  Come, Momiji!

Thanks for watching!
</pre>

}}